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Ultimate Cookie Oreo Brownies

Triple-layer dessert bars with chocolate chip cookie dough, Oreo cookies, and rich brownie batter — the ultimate indulgence for any chocolate lover.
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Prep Time 25 minutes
Cook Time 40 minutes
Total Time 1 hour 5 minutes
Servings: 16 squares
Course: Bars, Dessert
Cuisine: American
Calories: 380
Ingredients Equipment Method Notes

Ingredients
  

Cookie Layer
  • 0.5 cup unsalted butter, softened
  • 0.5 cup brown sugar, packed
  • 0.25 cup granulated sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • 1.25 cups all-purpose flour
  • 0.5 tsp baking soda
  • 0.25 tsp salt
  • 1 cup semi-sweet chocolate chips
Oreo Layer
  • 16 pieces Oreo cookies whole
Brownie Layer
  • 0.5 cup unsalted butter
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 0.33 cup unsweetened cocoa powder
  • 0.5 cup all-purpose flour
  • 0.25 tsp salt
  • 0.5 tsp baking powder

Equipment

  • Mixing bowls
  • Electric mixer
  • 9x9-inch baking pan
  • Spatula

Method
 

  1. Preheat oven to 350°F (175°C). Line a 9x9-inch pan with parchment paper.
  2. Prepare the cookie layer and press evenly into pan.
  3. Arrange Oreos on top of cookie dough in a single layer.
  4. Prepare brownie batter and pour over Oreos.
  5. Bake for 35–40 minutes until set on top but still slightly fudgy in center.
  6. Cool completely before slicing into squares.

Notes

For cleaner slices, chill before cutting. Add melted chocolate drizzle or extra Oreo pieces on top for a bakery finish.