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Preheat your oven to 325°F (or as directed on your brownie mix box). Line a 13x9 inch baking pan with parchment paper, leaving an overhang on the sides to easily lift the brownies out later. Lightly grease the parchment paper.

In a large mixing bowl, combine the brownie mix, vegetable oil, water, and large eggs. Stir with a spoon or spatula until just combined, being careful not to overmix the batter.

Pour about two-thirds of the prepared brownie batter into the lined baking pan and spread it evenly across the bottom.

Dollop about half of the Biscoff cookie butter over the brownie batter in spoonfuls, distributing it somewhat evenly.

Carefully pour the remaining brownie batter over the Biscoff dollops and gently spread it to cover the cookie butter layer.

Dollop the remaining Biscoff cookie butter over the top layer of brownie batter. Using a knife or a skewer, gently swirl the Biscoff into the brownie batter to create a beautiful marbled effect. If desired, sprinkle the crushed Biscoff cookies over the top for added texture and flavor.

Bake for 30 to 35 minutes, or according to the package directions for your brownie mix, until a toothpick inserted into the center comes out with moist crumbs, but not wet batter.

Remove the pan from the oven and let the brownies cool completely in the pan on a wire rack. This is crucial for clean cuts and a fudgy texture. Once cooled, use the parchment paper overhang to lift the entire slab of brownies out of the pan.

Cut the cooled brownies into squares and serve. Enjoy your delicious Biscoff Cookie Butter Swirl Brownies!


Preheat your oven to 325°F (or as directed on your brownie mix box). Line a 13x9 inch baking pan with parchment paper, leaving an overhang on the sides to easily lift the brownies out later. Lightly grease the parchment paper.

In a large mixing bowl, combine the brownie mix, vegetable oil, water, and large eggs. Stir with a spoon or spatula until just combined, being careful not to overmix the batter.

Pour about two-thirds of the prepared brownie batter into the lined baking pan and spread it evenly across the bottom.

Dollop about half of the Biscoff cookie butter over the brownie batter in spoonfuls, distributing it somewhat evenly.

Carefully pour the remaining brownie batter over the Biscoff dollops and gently spread it to cover the cookie butter layer.

Dollop the remaining Biscoff cookie butter over the top layer of brownie batter. Using a knife or a skewer, gently swirl the Biscoff into the brownie batter to create a beautiful marbled effect. If desired, sprinkle the crushed Biscoff cookies over the top for added texture and flavor.

Bake for 30 to 35 minutes, or according to the package directions for your brownie mix, until a toothpick inserted into the center comes out with moist crumbs, but not wet batter.

Remove the pan from the oven and let the brownies cool completely in the pan on a wire rack. This is crucial for clean cuts and a fudgy texture. Once cooled, use the parchment paper overhang to lift the entire slab of brownies out of the pan.

Cut the cooled brownies into squares and serve. Enjoy your delicious Biscoff Cookie Butter Swirl Brownies!
