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Brownie Oreo Cake

A decadent 5-layer cake made with alternating layers of tender Oreo cake and brownies, frosted with homemade Oreo buttercream.

Ingredients

Scale
  • 1 cup all-purpose flour
  • 1 cup cocoa powder
  • 1 tsp baking powder
  • 1/2 tsp salt
  • 1 cup unsalted butter, melted
  • 2 cups granulated sugar
  • 4 large eggs
  • 1 tsp vanilla extract
  • 15 Oreo cookies, crushed
  • For Oreo buttercream:
  • 1 cup unsalted butter, softened
  • 3 cups powdered sugar
  • 10 Oreo cookies, finely crushed
  • 2 tbsp heavy cream
  • 1 tsp vanilla extract

Instructions

  1. Preheat the oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
  2. In a bowl, sift together flour, cocoa powder, baking powder, and salt.
  3. In another large bowl, mix melted butter and sugar until combined.
  4. Add eggs one at a time, mixing well after each addition, then stir in vanilla.
  5. Gradually add dry ingredients to wet ingredients and mix until smooth.
  6. Fold in crushed Oreo cookies gently.
  7. Divide batter evenly between the prepared pans and bake for 25-30 minutes or until a toothpick comes out clean.
  8. Allow cakes to cool completely.
  9. Prepare the Oreo buttercream by beating softened butter until creamy.
  10. Gradually add powdered sugar, crushed Oreos, heavy cream, and vanilla extract and beat until fluffy.
  11. Layer the cakes with Oreo buttercream between each layer and frost the outside.
  12. Decorate with extra Oreo crumbs or whole Oreos if desired.

Notes

Ensure the cakes are completely cooled before frosting to avoid melting the buttercream. For richer flavor, use high-quality cocoa powder. The buttercream can be adjusted for consistency by varying cream amount.

Nutrition

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