
Fudgy Biscoff brownies have become my go-to dessert when I want something both decadent and easy. The deep cocoa flavor and spiced cookie butter come together for a brownie that feels a little fancy but is so simple to pull off. Minimal prep means you can have gooey squares of chocolate goodness ready to impress at any time. The wafting aroma alone pulls everyone into the kitchen for a taste.
When I first made these on a rainy Saturday, my family hovered around the oven for every step. Now this is the recipe my friends request most for any get-together.
Ingredients
- Biscoff cookie butter: Brings a sweet cinnamon spice and creamy texture. Choose a fresh jar with a smooth spread for easy layering.
- Brown sugar: Gives moisture and a deep caramel flavor base. Dark or light works fine.
- Granulated sugar: Adds sweetness and helps achieve that shiny top. Adjust slightly if you prefer less sweet treats.
- Large eggs: Adds structure and richness while holding everything together. Use the freshest eggs you can.
- Egg yolk: Boosts gooeyness and adds extra moisture.
- Vanilla extract: Enhances all the flavors. Opt for real vanilla extract or paste if possible.
- Unsalted butter: Brings buttery depth and helps blend all the ingredients. Softened for easier melting.
- Semi-sweet chocolate chips: Deepens chocolate flavor. Choose high-quality chips or try dark chocolate for more intensity.
- Unsweetened Dutch cocoa powder: Gives a rich color and balanced flavor. Make sure it is unsweetened.
- All-purpose flour: Provides structure but keep the measurement exact for best results.
- Espresso powder: Amplifies the chocolate flavor for an even richer taste. Omit if sensitive to caffeine.
- Fine sea salt: Balances sweetness and enhances every bite.
- Biscoff cookies: For topping, lending crunch and driving home that signature Biscoff flavor.
- Extra cookie butter: Drizzle for extra goo factor and a shiny finish.
Step-by-Step Instructions
- Prepare the Pan:
- Line your eight-inch square metal pan with parchment paper so the edges hang over for easy lifting. Chill the pan in the freezer while preparing everything else. A cold pan helps the cookie butter hold its shape.
- Preheat the Oven:
- Heat your oven to three hundred fifty degrees Fahrenheit. This ensures that your brownies will bake through evenly and have a gooey center with crisp edges.
- Mix Sugars and Eggs:
- In a large mixing bowl, whisk brown sugar, granulated sugar, two eggs, egg yolk, and vanilla until the mixture is fluffy, pale, and about doubled in volume. Spend about three minutes on this step for best texture.
- Melt Butter and Chocolate:
- In a microwave-safe bowl, combine unsalted butter and semi-sweet chocolate chips. Heat in thirty second bursts, stirring in between, until melted and glossy. Whisk in the Dutch cocoa powder until silky and smooth.
- Combine Mixtures:
- Gently fold your chocolate-butter mixture into the whipped egg and sugar mixture. Mix only until just combined to keep the texture fudgy.
- Incorporate Dry Ingredients:
- Sift flour, espresso powder, and salt directly over the bowl. Fold delicately using a spatula until you see no more dry spots. This gentle mixing prevents dense brownies.
- Layer the Batter:
- Spread half of the brownie batter into the chilled pan for a smooth base. Dollop chilled Biscoff cookie butter evenly over this layer, then add the remaining batter to cover.
- Add the Toppings:
- Crumble Biscoff cookies on top and drizzle a bit of extra cookie butter for that glossy, bakery-style finish and extra gooey bites.
- Bake the Brownies:
- Place the pan on the middle oven rack. Bake for thirty to forty minutes. Start checking at thirty minutes; a toothpick should come out with a few sticky crumbs attached for ultimate fudginess.
- Cool and Cut:
- Let brownies cool in the pan on a rack, then lift them out by the parchment. For sharp edges, chill slightly before cutting into squares.

You Must Know
My favorite part is snapping that glossy top before you reach the gooey center. The Biscoff drizzle always reminds me of the first time my daughter helped me swirl the cookie butter on top the anticipation made it the sweetest kitchen moment.
Storage Tips
Keep brownies in an airtight container at room temperature for up to three days. For a longer shelf life, refrigerate in a sealed container for up to one week. If freezing, layer squares between parchment paper in a freezer-safe bag. When hunger strikes, thaw or microwave briefly for a warm treat.
Ingredient Substitutions
Swap Biscoff with peanut or almond butter if needed. Try dark chocolate or vegan chocolate chips for a dairy-free bake with coconut oil replacing the butter. Add chopped walnuts or pecans for extra crunch or a pinch of cinnamon for a spicy twist.
Serving Suggestions
Serve warm with a scoop of vanilla ice cream for a decadent dessert. Add a handful of fresh raspberries for brightness or serve alongside a piping hot shot of espresso to enhance the chocolate flavors. Drizzle with more cookie butter or chocolate sauce for special occasions.

Biscoff Brownie Origins
Biscoff spread made from Belgian spiced cookies has found its way into many American kitchens over the past decade. The marriage of cookie butter and brownies channels the comfort of both classic European and American treats, blending nostalgia with modern flavor.
Recipe FAQs
- → What gives Biscoff brownies their unique flavor?
The distinctive taste comes from the spiced cookie butter incorporated into the batter and as a layered topping, blending smoothly with rich chocolate.
- → How do I ensure a fudgy texture in these brownies?
Mix the wet and dry ingredients just until combined and avoid overmixing. Proper flour measurement also helps maintain a moist, tender crumb.
- → Can I substitute the Biscoff cookie butter with other spreads?
Yes, creamy nut butters like almond or peanut butter work well as alternatives, adding a nutty richness while preserving the gooey texture.
- → What’s the best way to bake and check doneness?
Bake at 350°F for 30–40 minutes and use a toothpick; it should come out with a few moist crumbs but not wet batter to ensure gooey brownies.
- → How should leftovers be stored for freshness?
Store brownies in an airtight container at room temperature for up to 3 days or refrigerate for about a week to keep them moist and flavorful.
- → Can these brownies be frozen for later use?
Absolutely, freeze cut squares wrapped with parchment paper between layers in a sealed container for up to one month. Thaw before warming gently.