Ultimate Fudgy Dark Chocolate Biscoff Brownies: Your New Favorite Indulgence
Prepare yourself for an extraordinary treat with these dark chocolate Biscoff brownies – quite simply, the most decadent and intensely rich brownies you’ll ever taste! Each square features an ultra-fudgy base, generously packed with luscious cookie butter spread. They are then elegantly topped with a signature Biscoff swirl and a scattering of crispy Biscoff cookies, adding both beauty and crunch. What makes this recipe even more appealing is its surprising ease and speed, allowing you to create this gourmet dessert in just about 35 minutes. Get ready to impress with minimal effort!

Why You’ll Adore This Biscoff Brownie Recipe
For lovers of rich, chocolatey desserts, these Biscoff brownies are a revelation. While a fudgy dark chocolate brownie is already a magnificent creation, imagine elevating it with the unique, spiced caramel notes of Biscoff spread and the delightful crunch of Biscoff cookies. That’s exactly what this recipe delivers – an incredibly rich, utterly decadent, and perfectly fudgy brownie that will captivate your taste buds.
My connection to Lotus Biscoff Cookies – or “Speculoos” as they are affectionately known in my native Belgium – runs deep. The sweet, subtly spiced flavor of Biscoff always evokes a sense of home for me. When this distinctive taste is married with intense dark chocolate, it creates a flavor profile that is both comforting and sophisticated, truly a match made in heaven for anyone with an appreciation for fine baked goods.
Beyond their exceptional taste, these brownies boast remarkable convenience. They are surprisingly easy to make and can be ready to enjoy in less than 35 minutes, making them perfect for spontaneous baking urges or when you need a quick, impressive dessert. A key secret to their lasting appeal is the use of dark chocolate instead of just cocoa powder. This ensures that the brownies remain incredibly fudgy and moist for days, rather than drying out. In fact, their texture often improves over time as the flavors meld and deepen, becoming even more tender and integrated. This makes them an excellent choice for making ahead, ideal for entertaining, gifting, or simply ensuring you have a luxurious treat to savor throughout the week.
The harmonious blend of deep cocoa bitterness from the dark chocolate and the warm, spiced sweetness of Biscoff creates a complex dessert that is both familiar and exciting. The contrast between the soft, melt-in-your-mouth brownie and the crisp cookie topping adds another layer of enjoyment, making every bite an unforgettable experience. Whether you’re a seasoned baker or a novice, this recipe is designed for success, promising a batch of brownies that will earn rave reviews.
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The Essential Ingredients for Your Biscoff Brownies

To create these extraordinary Biscoff brownies, selecting the right ingredients is paramount. Below, we break down each component, explaining its role in achieving that perfect fudgy texture and rich flavor. For precise measurements, please refer to the detailed recipe card at the end of this post.
- Dark Cooking Chocolate: This is the cornerstone of our brownies, providing the deep, intense chocolate flavor and contributing significantly to their fudgy texture. I strongly recommend using a high-quality dark cooking chocolate with at least 70% cacao content. This ensures a robust chocolate presence that beautifully complements the Biscoff without being overly sweet. It’s crucial to use actual cooking chocolate – not a standard eating chocolate bar or chocolate chips. Eating chocolate contains emulsifiers and less cocoa butter, which can lead to a less desirable, often grainy texture when baked. Chocolate chips are designed to hold their shape, preventing a smooth melt into the batter.
- Unsalted Butter: Fresh unsalted butter is vital for a rich, tender, and moist crumb. Since it will be melted, it can be used directly from the fridge. Butter adds essential fat, contributing to the luxurious mouthfeel and binding all the ingredients into a cohesive, delicious batter.
- Biscoff Cookie Spread: Also known as Cookie Butter Spread or Speculoos Spread, this ingredient is the heart of the “Biscoff” in our brownies. It serves a dual purpose: a portion is incorporated directly into the brownie batter to infuse it with its signature spiced caramel notes, while another portion is drizzled on top to create an attractive and flavorful swirl. If your spread is cold from the fridge, gently warm it in the microwave for a few seconds until it’s soft and easily pourable for the swirl. Both smooth and crunchy versions work wonderfully, with the crunchy option adding a delightful textural surprise.
- Eggs: Medium-sized eggs, ideally at room temperature, are used in this recipe. Room temperature eggs are crucial because they emulsify more effectively with the other ingredients, leading to a smoother, more uniform batter. This results in a more consistent and tender texture in your baked brownies, enhancing their fudginess and overall appeal.
- Sugar (Brown Sugar & White Caster Sugar): The interplay between brown and white sugar is key to achieving the ultimate brownie texture. This recipe calls for a balanced 50/50 ratio. Brown sugar contributes moisture and a deeper, caramel-like flavor, which is essential for a super fudgy interior. White caster sugar, on the other hand, helps create those desirable slightly chewy edges and the beautiful shiny, crackly crust characteristic of a perfect brownie. While you can adjust the ratio (e.g., all brown sugar for maximum fudginess or all white sugar for more chewiness and shine), the recommended blend offers a harmonious balance.
- Plain / All-Purpose Flour + Fine Table Salt: A relatively small amount of plain or all-purpose flour is used to ensure these brownies remain intensely fudgy and dense, rather than becoming cake-like. Sifting the flour is highly recommended to prevent lumps and ensure a smooth batter. A touch of fine table salt is indispensable; it doesn’t just add seasoning but also critically balances the sweetness and enhances the complex flavors of both the dark chocolate and the Biscoff, making them truly pop. For a subtle gourmet touch, consider sprinkling a few flakes of sea salt on top before baking.
- Biscoff / Speculoos Cookies: These iconic cookies are primarily used as an optional but highly recommended topping for your brownies. They provide a fantastic textural contrast with their signature crispness and an extra burst of that unique Biscoff spice. While you might be tempted to crush them and mix them into the batter, I’ve found that their distinct flavor can get lost. Keeping them on top ensures their crispness and flavor shine through, making them a delightful garnish.
Step-by-Step Guide: Crafting Your Biscoff Brownies
Creating these delightful speculoos brownies is a surprisingly quick and straightforward process. Follow these detailed, easy-to-understand instructions to bake a batch of perfectly fudgy and flavorful brownies in under an hour!

- First, preheat your oven to 180°C / 350°F. Then, generously grease a 23 cm / 9 inch square baking pan and line it with baking or parchment paper, ensuring the paper extends over the edges to create “handles” for easy removal later. Set this prepared pan aside.
- If you’re using bar chocolate, finely chop both portions of your dark cooking chocolate. Chopping it into smaller pieces ensures faster and more even melting, preventing scorching. Keep the chocolate designated for melting (the larger portion) separate from the chocolate chunks you’ll fold into the batter later.
- Melting the Base (Photo 1 & 2): In a heat-proof bowl, combine the first portion of chopped Dark Chocolate (200g / 7 oz), the Unsalted Butter (cut into small cubes to speed up melting), and the initial half of the Biscoff Cookie Butter Spread (45g / 3 tablespoons). Melt these ingredients gently in the microwave in 30-second increments, stirring thoroughly after each interval until the mixture is completely smooth and glossy. Alternatively, you can use a double-boiler method. Once melted, set the bowl aside to cool slightly to avoid cooking the eggs in the next step.
- Whisking Eggs and Sugars (Photo 3 & 4): In a separate large mixing bowl, add the room temperature Eggs, Brown Sugar, and White Caster Sugar. Whisk these ingredients together vigorously for approximately one minute, or until you observe small bubbles forming on the surface. While more whisking can contribute to a shinier brownie crust, be cautious not to over-whisk, as incorporating too much air can make the brownies rise excessively and become less fudgy.
Important Tip: Before combining, ensure your melted chocolate and butter mixture has cooled adequately. If it’s too hot, it will partially cook the eggs when added, leading to an undesirable texture in your final brownies. It should be warm to the touch, but not hot.

- Combining Wet Ingredients (Photo 5): Pour the slightly cooled melted chocolate/butter mixture into the bowl with the whisked eggs and sugar. Gently mix these together using a spatula or spoon until they are just combined. Avoid overmixing, as this can lead to a tougher, less desirable brownie texture.
- Adding Dry Ingredients (Photo 6 & 7): Sift the Plain / All-Purpose Flour and Fine Table Salt directly into the wet mixture. Very gently fold these dry ingredients in. Stop mixing as soon as there are no visible streaks of flour. Over-working the batter at this stage will develop the gluten in the flour, resulting in a more cake-like brownie rather than the desired fudgy one.
- Folding in Chocolate Chunks (Photo 8): Add the second portion of your Dark Chocolate Chunks (130g / 4.5 oz) to the batter. Gently fold them in until they are evenly distributed throughout the mixture. These chunks will create delightful pockets of melted chocolate within your finished brownies.

The final steps involve preparing the delicious toppings and baking your brownies to perfection:
- Pour the prepared brownie batter into your greased and lined baking tin. Use a small offset spatula or the back of a spoon to gently spread the batter around, aiming for a relatively even layer across the pan. It doesn’t need to be absolutely flat, but generally distributed.
- Drizzling the Swirl (Photo 9): Take the remaining Biscoff / Cookie Butter Spread (60g / 1/4 cup) and generously drizzle it all over the top surface of the brownie batter. If the spread is too firm, a quick zap in the microwave will make it perfectly fluid for drizzling.
- Creating the Swirl (Photo 10): Using the tip of a knife, a toothpick, or a skewer, gently draw through the drizzled Biscoff spread and into the brownie batter to create beautiful, artistic swirl patterns. This not only looks stunning but also integrates that wonderful Biscoff flavor throughout the top layer.
- Adding Cookie Topping (Photo 11): As a delightful, optional step, arrange some Biscoff Cookies (cut in half or left whole) on top of the swirled brownie batter. For an extra touch of texture and visual appeal, you can also crush a few cookies and sprinkle the crumbs generously around.
- Place the pan carefully into your preheated oven and bake for precisely 20 minutes. This short baking time is crucial for achieving perfectly fudgy Biscoff brownies. Resist the temptation to overbake, as this will result in a drier, cakey texture.
- Once baked, remove the brownies from the oven. This next instruction is paramount for success: you must allow them to cool down completely in the baking pan before attempting to remove them or slice. Brownies are very soft and delicate when warm, and trying to move or cut them too soon will likely cause them to fall apart or break.
- After they have cooled completely and firmed up, use the parchment paper overhang to gently lift the brownies from the pan. You can then slice them. I typically cut these rich brownies into 9 large slices. However, given their intense richness and decadence, feel free to cut them into smaller pieces if you prefer – trust me, even a small portion is incredibly satisfying!
Remember, patience during the cooling phase is truly a virtue. This crucial step allows the brownies to set fully, making them easy to slice cleanly and ensuring that perfect fudgy texture is locked in. Do not rush this part of the process for the best results!

Frequently Asked Questions About Baking Biscoff Brownies
Biscoff refers to a popular brand of spiced shortbread cookies, which are originally known as Speculoos in Belgium, their country of origin. In other parts of Europe, like the Netherlands, similar biscuits might be called Speculass or Spekulatius. Historically, Speculoos cookies were handmade for the Feast of St. Nicholas (the Belgian/Dutch Christmas celebration) and were recognized by their intricate, decorative patterns and various shapes. While once a seasonal treat, these aromatic cookies are now enjoyed throughout the year, famously served alongside coffee.
The name “Biscoff” was introduced by the Belgian company Lotus when they began distributing their traditional Speculoos cookies globally. Therefore, to clarify, Biscoff and Speculoos fundamentally represent the same type of cookie. The crucial difference is that Biscoff is a specific brand name: while all Biscoff cookies are indeed Speculoos, not all Speculoos cookies are necessarily from the Biscoff brand. Here’s a fun fact: the name Biscoff is actually a clever portmanteau derived from “Bis” (biscuit) and “Coff” (coffee), perfectly describing their ideal pairing!
Absolutely! You are welcome to substitute the smooth cookie butter spread with its crunchy counterpart. Using crunchy Biscoff spread will introduce delightful small, crispy cookie bits throughout your fudgy brownies, adding an extra layer of texture that many find appealing. If you love a bit of bite in your desserts, the crunchy version will be a fantastic addition, enhancing the overall sensory experience of these already decadent brownies.
For this Biscoff brownie recipe, the quality and type of chocolate are paramount, as the chocolate forms the backbone of both its flavor and renowned fudgy texture. This recipe specifically calls for dark cooking chocolate, not cocoa powder, because it yields a far richer, more complex chocolate flavor and contributes significantly to the dense, moist consistency we’re striving for. I highly recommend using a premium cooking chocolate with a high cacao percentage, ideally 70% or more. This ensures a deep, intense chocolate taste that beautifully complements the spiced sweetness of Biscoff.
It’s critical to exclusively use proper cooking chocolate and to avoid standard eating chocolate bars or chocolate chips. Eating chocolate bars often contain more sugar and different emulsifiers, which can result in a less smooth melt and a potentially grainy texture in your brownies. Chocolate chips are designed to maintain their shape during baking, preventing them from fully integrating into the batter and hindering that desirable fudgy consistency. Investing in high-quality cooking chocolate will make a noticeable difference in the final taste and texture of your decadent Biscoff brownies.
The shiny, crackly crust is a hallmark of an exceptional brownie, and there are a few key steps to help achieve it. First, ensuring your eggs are at room temperature is important, as they emulsify better with the other ingredients and incorporate more air when whisked. Second, vigorously whisking the eggs and sugars together for about a minute, until a light, bubbly mixture forms, creates a stable foundation for the crust. This process helps dissolve the sugar, which then caramelizes on the surface during baking to form that signature sheen. Finally, the precise ratio of sugar to fat in this recipe, combined with the relatively quick baking time, works in tandem to set that glossy top layer. Avoid overmixing once the flour is added, as this can develop gluten and lead to a tougher brownie, which can hinder crust formation.
To prepare these delicious Biscoff brownies, you’ll need some standard kitchen essentials. Gather a 9-inch (23 cm) square baking pan, parchment paper, a sturdy heat-proof bowl for melting, a large mixing bowl, a whisk (an electric mixer is optional but not required), a rubber spatula for gentle folding, measuring cups and spoons (or a kitchen scale for more accurate measurements), and a sharp knife for clean slicing once the brownies have cooled. With these basic tools, you’re all set for a successful baking session!

Expert Tips for Baking Your Best Biscoff Brownies
- Achieving the Perfect Texture with Sugar: This speculoos brownie recipe smartly utilizes a combination of both white caster sugar and brown sugar. This blend is crucial for creating a brownie that is both wonderfully chewy on the edges and incredibly fudgy in the center. If your preference leans towards an even more intensely fudgy brownie, consider using all brown sugar. Conversely, for a brownie with a more pronounced chewy bite and that desirable shiny, crackly top, opting for all white sugar will yield those results. Feel free to experiment to discover your ultimate brownie texture!
- The Unwavering Importance of Quality Chocolate: The dark chocolate is not merely an ingredient; it’s a foundational flavor and texture provider in these brownies. Always prioritize using a high-quality dark cooking chocolate with a high percentage of cacao (70% is strongly recommended) to achieve the richest, most profound chocolate flavor. This also contributes significantly to the brownies’ luxurious fudgy texture. It’s vital to remember that proper cooking chocolate melts and bakes differently than eating chocolate bars or chocolate chips, which contain stabilizers that can prevent them from fully incorporating into the batter and impacting the final fudginess.
- Patience is Key: The Cooling Process: This is arguably the most critical tip for ensuring perfectly structured brownies. It is absolutely essential to allow your brownies to cool down completely, undisturbed, within their baking pan before you even consider removing them or slicing. When they first emerge from the oven, brownies are very soft and fragile. Attempting to move or cut them while still warm will almost certainly lead to them falling apart or breaking. Embrace patience; it will be richly rewarded with clean, perfectly portioned, and beautifully fudgy slices.
- Embrace the Evolving Texture: One of the most delightful aspects of this recipe is how the texture of these Biscoff brownies naturally improves over a day or two. As they rest, they become even more intensely fudgy, moist, and deeply flavorful, almost melting in your mouth. The dark chocolate chunks embedded within the batter will also firm up slightly, providing a lovely textural contrast and a satisfying bite with each mouthful. This characteristic makes them an ideal candidate for making ahead for events or simply for enjoying gourmet leftovers.
- Guard Against Overbaking: Brownies are notoriously easy to overbake, which is the quickest way to lose their signature fudgy appeal, turning them dry and cakey. Keep a vigilant eye on your oven and baking time. The edges should look set, but the very center of the brownies should still have a slight wobble when gently shaken. The precise 20-minute baking time in this recipe is specifically calibrated to achieve maximum fudginess, so trust the process and avoid extending the baking duration.
- Room Temperature Eggs: A Small Detail, Big Impact: While already mentioned in the ingredients, the importance of using room temperature eggs cannot be overstated. Eggs at room temperature emulsify far more effectively with the melted butter and chocolate, resulting in a smoother, more cohesive batter. This, in turn, contributes to a more uniform and tender crumb in your finished brownies, enhancing their overall fudginess and velvety texture.
Storing and Freezing Your Decadent Biscoff Brownies
Proper storage is key to extending the life and deliciousness of your homemade Biscoff brownies. Follow these simple guidelines to keep them fresh and ready to enjoy:
These rich brownies will maintain their optimal freshness and signature fudgy texture for approximately 3 to 4 days. I personally find they are best kept at room temperature. To store, place them in an airtight container, which prevents them from drying out and helps retain their soft, gooey centers. Alternatively, you can leave them in their baking pan and cover it tightly with plastic wrap or aluminum foil.
While refrigeration is an option, be aware that the chocolate and butter in the brownies will firm up significantly in a cold environment, making them denser and harder. If you choose to store them in the fridge, I highly recommend gently warming individual slices in the microwave for 10-15 seconds before serving. This brief re-heating will bring them back to a wonderfully soft, melt-in-your-mouth consistency, enhancing their original texture and flavor.
For these specific Biscoff brownies, I generally do not recommend freezing them. The unique fudgy texture, which relies on a precise balance of fats and sugars, can sometimes be compromised after freezing and thawing. They might become slightly crumbly or lose some of their signature gooeyness. For the best culinary experience, enjoy these delectable brownies fresh within a few days of baking!

Explore More Irresistible Biscoff Recipes
If you’ve been enchanted by the unique, spiced caramel flavor of Biscoff in these brownies, you’ll be delighted to discover a whole world of other fantastic recipes that celebrate this incredible ingredient. Dive in and explore more Biscoff-infused treats!
- Baked Biscoff Cheesecake: A Creamy Dream
- Biscoff Truffles: Bite-Sized Delights
- Simple Biscoff Butter Cookies
- Charming Mini Biscoff Cheesecakes
- Creamy Biscoff Cookie Butter Ice Cream
- Effortless Biscoff Cake Recipe
- Luxurious Cookie Butter Cream Cheese Frosting
- Delightful Biscoff Cupcakes
- Quick & Easy Biscoff Donuts
- Simple No-Bake Biscoff Cheesecake
Baked These Delicious Brownies?
We’d absolutely love to know what you thought! Please share your feedback by leaving a comment below. And don’t forget to show off your stunning creations on Instagram – tag us @a.baking.journey with a photo of your Biscoff brownies!
Printable Recipe Card: Fudgy Biscoff Brownies

Decadent Biscoff Brownies
Servings:
9 large slices
Author:
Sylvie
15
20
35
Ingredients
Brownie Batter
- 150 g (10 tablespoons) Unsalted Butter
- 200 g (7 oz) Dark Cooking Chocolate, 70% cacao recommended, chopped
- 45 g (3 tablespoons) Biscoff Cookie Spread, for batter
- 3 medium Eggs, at room temperature
- 75 g (1/3 cup) Brown Sugar
- 75 g (1/3 cup) White Caster Sugar
- 60 g (7 1/2 tablespoons) Plain / All-Purpose Flour, sifted
- 1/3 teaspoon Fine Table Salt
- 130 g (4.5 oz) Dark Chocolate Chunks
Brownie Toppings
- 60 g (1/4 cup) Biscoff Cookie Spread, for swirling
- 6 Biscoff Cookies, cut in half, optional
Instructions
Brownie Batter Preparation
- Preheat oven to 180°C / 350°F. Grease and line a 23 cm / 9 inch square pan with baking paper, leaving an overhang for easy removal.
- Chop the two parts of Dark Cooking Chocolate into small chunks (200g for melting, 130g for mix-ins). Keep them separate.
- In a heat-proof bowl, combine 200g chopped Chocolate, Butter, and 45g Biscoff Spread. Melt in the microwave (30-sec intervals) or over a double-boiler until smooth. Set aside to cool slightly.
- In a separate large bowl, whisk together the Eggs, Brown Sugar, and White Caster Sugar for about 1 minute until small bubbles appear.
- Pour the cooled melted chocolate/butter mixture into the egg/sugar mixture. Gently mix until just combined.
- Add the Sifted Flour and Fine Table Salt. Mix very gently until just combined, being careful not to over-mix.
- Gently fold in the remaining 130g of Dark Chocolate Chunks.
- Pour the brownie batter into the prepared pan and spread it evenly.
Finishing and Baking
- Drizzle the remaining 60g Biscoff Spread over the brownies. Use a knife or skewer to create a beautiful swirl pattern.
- Optional: Top with Biscoff Cookies (halved or crushed) for added crunch and visual appeal.
- Bake for 20 minutes. Allow the brownies to cool completely in the pan before carefully removing and slicing.
Watch the Recipe Video
Recipe Notes & Tips
Ingredient Specifics:
- Chocolate: For the most intense flavor and the fudgiest texture, always use a dark cooking chocolate with at least 70% cacao. Avoid using milk chocolate or eating chocolate bars/chips, as they will alter the texture and sweetness balance.
- Sugar: The precise blend of brown and white sugar is designed to create a brownie with a superb balance of fudginess and chewy edges, crowned with a beautiful shiny top. For a brownie that is even more intensely fudgy, you can use all brown sugar. If you prefer a chewier brownie with a more pronounced shiny crust, an all-white sugar approach will achieve this.
Preparation Reminders:
- Whisking Eggs & Sugar: While whisking longer can contribute to a shinier crust, be mindful that excessive air incorporation can make the brownies less dense and fudgy, causing them to rise more like a cake in the oven. Aim for small bubbles, then integrate gently.
- Biscoff Spread Consistency: Ensure the Biscoff spread reserved for swirling is warm and very fluid. If it’s too thick, a quick zap in the microwave (10-15 seconds) will loosen it up perfectly for easy drizzling and swirling.
- Cooling is Non-Negotiable: It is absolutely crucial to allow the brownies to cool completely in their baking pan. They are quite soft and fragile when warm, and attempting to slice or move them before they are fully cooled and set will likely result in breakage and a messy presentation. Patience ensures a perfect slice every time.
Nutrition Information (per serving)
Carbohydrates: 46g |
Protein: 6g |
Fat: 35g |
Saturated Fat: 19g |
Polyunsaturated Fat: 1g |
Monounsaturated Fat: 9g |
Trans Fat: 1g |
Cholesterol: 91mg |
Sodium: 114mg |
Potassium: 125mg |
Fiber: 4g |
Sugar: 33g |
Vitamin A: 503IU |
Calcium: 29mg |
Iron: 2mg
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