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A cookie dough oreo brownie with a scoop of ice cream, chocolate sauce and oreo crumbs on top.

Slutty Brownies

These slutty brownies are the most over-the-top dessert you'll ever try. They have a soft and chewy chocolate chip cookie base, a layer of Oreo cookies, and fudgy brownie on top! This recipe is 100% from scratch and definitely the most indulgent brownie recipe around. 
Course Dessert
Cuisine American
Keyword Slutty Brownies
Prep Time 30 minutes
Cook Time 50 minutes
Total Time 1 hour 20 minutes
Servings 18 slices
Calories 587kcal


Chocolate Chip Cookie Layer

  • 1 cup unsalted butter melted and cooled
  • ¾ cup brown sugar
  • ¾ cup white sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 2 ¼ cups all-purpose flour aka plain flour
  • ¼ teaspoon salt
  • 1 ¼ cups chocolate chips

Oreo Layer

  • 24 Oreo cookies

Brownie Layer

  • cup unsalted butter cubed
  • 8 oz semi-sweet chocolate* finely chopped
  • 1 ½ cups white sugar
  • 3 large eggs
  • ½ cup all-purpose flour
  • 2 tablespoons cocoa powder
  • ½ teaspoon salt


  • Preheat the oven to 350F (180C) degrees.
  • Line a 9x13 inch pan with parchment paper and leave an overhang around the sides.

Chocolate Chip Cookie Layer

  • Beat together the melted butter, brown sugar and white sugar.
  • Beat in the eggs and vanilla extract.
  • With the mixer on low speed, beat in the flour and salt.
  • Turn off the mixer and stir in the chocolate chips using a rubber spatula or wooden spoon.
  • Spoon the mixture into the prepared pan, and spread smooth with a spatula.

Oreo Layer

  • Place the Oreo cookies on top of the cookie dough pressing them down just slightly. I got 6 rows of 4 cookies.

Brownie Batter

  • Add the butter and chocolate to a large heatproof bowl. Microwave on medium power for 45 second intervals, stirring between each, until melted.
  • In a separate bowl, whisk together the eggs and sugar.
  • Whisk the chocolate mixture into the egg mixture.
  • Gently fold in the flour, cocoa powder and salt using rubber spatula or wooden spoon.
  • Pour the brownie batter over the Oreo cookie layer, and spread the top smooth as needed.

Baking and Cooling

  • Bake the brownies in the preheated oven for 50-55 minutes, or until an inserted toothpick comes out dry or with a few damp crumbs. If you notice the top is starting to burn, cover with aluminum foil and continue baking. I first check my brownies at 45 minutes just in case.
  • Cool the brownies fully (at least 4 hours) before slicing for clean, even cuts.
  • Store leftovers at room temperature in an airtight container for up to 4 days.


Semi-sweet chocolate can be substituted for dark chocolate. However, I wouldn't use a chocolate that's more than 60% cocoa.
Recipe can be halved and made in a 9x9 inch pan, the bake time will be about the same or slightly shorter. 


Calories: 587kcal | Carbohydrates: 75g | Protein: 7g | Fat: 30g | Saturated Fat: 17g | Cholesterol: 106mg | Sodium: 208mg | Potassium: 174mg | Fiber: 2g | Sugar: 53g | Vitamin A: 645IU | Vitamin C: 1mg | Calcium: 50mg | Iron: 4mg