Brownies are a decadent, triple-layered dessert with chocolate chip cookie dough, Oreo cookies, and rich brownie batter — baked into one outrageous treat.
Cookie Layer:
1/2 cup unsalted butter, softened
1/3 cup granulated sugar
1/3 cup brown sugar
1 egg
1 tsp vanilla extract
1¼ cups all-purpose flour
1/2 tsp baking soda
1/4 tsp salt
3/4 cup chocolate chips
Oreo Layer:
16–20 Oreo cookies
Brownie Layer:
1 box brownie mix + ingredients called for
OR
1/2 cup unsalted butter (melted)
1 cup sugar
2 eggs
1/3 cup unsweetened cocoa powder
1/2 cup flour
1/4 tsp salt
1/2 tsp vanilla extract
Preheat oven to 350°F (175°C). Line a 9×9-inch pan with parchment.
Prepare cookie dough: cream butter and sugars, beat in egg and vanilla, mix in dry ingredients and chocolate chips.
Press cookie dough evenly into the pan.
Layer Oreos over the cookie dough in a single layer.
Prepare brownie batter (boxed or homemade), then pour over Oreos and spread evenly.
Bake for 35–40 minutes, until a toothpick comes out with moist crumbs.
Cool completely before slicing.
Let cool 1–2 hours before cutting.
Use espresso powder for deeper chocolate flavor.
Store in airtight container up to 5 days.