Ingredients
Scale
- For the Cookie Dough Layer:
- 1/2 cup unsalted butter, softened
- 1/2 cup light brown sugar, packed
- 1/4 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 1/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup semi-sweet chocolate chips
- For the Middle Layer:
- 16–20 Original or Double Stuf Oreo cookies
- For the Brownie Layer:
- 1/2 cup unsalted butter, melted
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/3 cup unsweetened cocoa powder
- 1/2 cup all-purpose flour
- 1/4 teaspoon salt
Instructions
- Step 1: Preparation
Preheat your oven to 350°F (175°C). Line an 8×8-inch square baking pan with parchment paper, leaving an overhang on the sides. This allows you to lift the bars out easily once they are cool. Lightly grease the parchment with non-stick spray or butter. - Step 2: Mix the Cookie Dough Layer
In a medium bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is light and fluffy. Beat in the egg and vanilla extract. In a separate small bowl, whisk together the flour, baking soda, and salt. Gradually stir the dry ingredients into the wet ingredients until just combined. Fold in the chocolate chips. Press this dough evenly into the bottom of your prepared baking pan. - Step 3: Add the Oreo Layer
Place the Oreo cookies in a single layer over the top of the raw cookie dough. Pack them closely together so every bite of the finished bar contains a piece of cookie. You may need to break a few cookies to fill in any large gaps. - Step 4: Prepare the Brownie Batter
In a clean bowl, whisk the melted butter and sugar together. Add the eggs and vanilla, whisking until the mixture is smooth and glossy. Sift in the cocoa powder, flour, and salt. Gently fold the dry ingredients into the batter with a spatula until no white streaks remain. Pour the brownie batter over the Oreo layer and spread it to the edges with an offset spatula to cover the cookies completely. - Step 5: Baking and Cooling
Place the pan in the center of the oven and bake for 30 to 35 minutes. The edges should be set, but the center should still have a very slight jiggle. Do not overbake, as the brownies will continue to firm up as they cool. Remove from the oven and let the bars cool completely in the pan for at least 2 hours. Lifting them out while warm will cause the layers to separate. Slice into 16 squares and serve.
- Cook Time: 55 minutes