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–+ servings
Three squares of triple layer brownies on a plate.
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5 from 1 vote

Triple Layer Oreo Brownies (Cookie-Oreo-Brownie Bars)

Triple layer Oreo brownies with a chewy cookie base, Oreo middle, and fudgy brownie top. Aka Slutty Brownies, they're an indulgent treat you can prep ahead and enjoy anytime.
Prep Time20 minutes
Cook Time50 minutes
Chilling4 hours
Course: Dessert, Snack
Cuisine: American, Australian
Servings: 20
Calories: 323kcal

Equipment

Ingredients

Chocolate Chip Cookie Layer (you will need half, so freeze the rest into cookie balls for later)

  • 170 gram Unsalted butter just melted and cooled for 5 minutes
  • 180 gram Light brown sugar
  • 120 gram White sugar
  • 1 Egg
  • 1 Egg yolk
  • 1 tablespoon Vanilla extract
  • 260 grams Self-raising flour
  • ¼ teaspoon Salt
  • 180 grams Dark chocolate chips

Oreo Layer

  • 25 Original Oreos

Brownie Layer

  • 150 grams Butter melted
  • 100 grams Brown sugar
  • 125 grams White sugar
  • 1 teaspoon Vanilla extract
  • 2 Eggs free range, XL
  • 60 grams Self-raising flour see notes
  • 60 grams Cocoa dutch process for a smooth flavour
  • 100 grams Dark chocolate chips
Metric - US Customary

Instructions

  • Heat oven to 180°C/350°F/160°FF
  • Heat butter in microwave until it's just melted. Set aside while you prep the other ingredients.
  • Grease and line your brownie pan with baking paper.
  • In the bowl of a stand mixer, combine the cooled melted butter and sugars until well blended
  • Add the egg, egg yolk and vanilla and beat until light and creamy. Beat on medium-high for 5 minutes.
  • Stop the mixer, add the flour and salt and beat until almost combined.
  • Remove bowl from stand, add chocolate chips, then combine with a wooden spoon or spatula. DO NOT OVERMIX
  • Scoop cookie dough into prepared brownie pan and spread into an even layer

Oreo Layer

  • Arrange Oreo cookies on top of cookie dough, so they sit flat and are evenly placed.

Brownie Layer

  • In a large mixing bowl, whisk together the melted butter and sugars.
  • Add the eggs and vanilla, then whisk for a good 2 minutes.
  • Add combined flour and cocoa, then fold through until almost combined.
  • Fold through the chocolate chips.
  • Gently spread the brownie batter over the Oreo cookies, trying not to move the cookies around.
  • Bake for 50 minutes, then remove from the oven and cool completely in the pan.

Nutrition

Calories: 323kcal | Carbohydrates: 36g | Protein: 4g | Fat: 18g | Saturated Fat: 13g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 43mg | Sodium: 598mg | Potassium: 119mg | Fiber: 1g | Sugar: 12g | Vitamin A: 414IU | Vitamin C: 0.1mg | Calcium: 57mg | Iron: 0.5mg