Oreo Brownie Cake Recipe

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  • Prep Time

    30 mins

  • Cook Time

    1 hr

  • Total Time

    1 hr 30 mins

  • Servings

    16 servings

  • Calories

    735 kcal

  • Course

    Cake

  • Cuisine

    American

Oreo Brownie Cake Recipe

Oreo Brownie Cake is a decadent treat with three layers! Starting with a brownie base and topped with two layers of white cake, this cake is covered with Oreo frosting and chocolate ganache!

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Ingredients

Servings

For the brownies:

  • 1 box brownie mix for an 8 or 9-inch pan- with ingredients on box- (I used Ghirardelli Triple Fudge Brownies)
  • 12 Double Stuff Oreo Cookies

For the Cake:

  • 5 egg whites room temperature
  • ¾ cup milk divided
  • ¾ cup unsalted butter softened
  • 1 ¾ cup granulated sugar
  • 1 teaspoon vanilla extract
  • 2 ½ cups cake flour
  • 1 Tablespoon baking powder
  • ½ teaspoon kosher salt

For the frosting:

  • 1 ½ cups unsalted butter softened
  • 4 cups powdered sugar
  • ¼ cup milk
  • 15 Double Stuff Oreos divided

For the ganache:

  • 10 ounce Ghirardelli dark chocolate morsels
  • 6 Tablespoons heavy cream
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Instructions

For the brownie layer:

  1. Prepare brownie mix in a 9-inch springform pan, lined with parchment paper and sprayed with baking spray. Press Oreos into the top of the brownie batter. Bake according to package directions. Remove from oven.
  2. Cool 5 minutes in pan, then remove springform and cool on wire rack. Set aside.

For the cake layers:

  1. Whisk together the egg whites and 1/4 cup of the milk in a small bowl until slightly combined. Set aside.
  2. In a mixing bowl, beat butter, sugar, and vanilla for 2 minutes on medium speed, scraping down the sides of the bowl as needed. Add in dry ingredients and mix until combined. Beat in egg white mixture until fully blended. Add in remaining milk and beat for 3-4 minutes, scraping down the sides of the bowl.
  3. Spray two 9-inch cake pans with baking spray. Pour batter into pans and bake in a 350 degree oven for 26-28 minutes. Remove and cool completely on wire rack.

For the frosting:

  1. In a food processor, pulse the Oreo until they become a fine crumb. Set aside.
  2. Beat butter in a large mixing bowl for about 4 minutes, until fluffy and pale in color. Add in powdered sugar and milk and beat an additional 3-5 minutes, until fluffy and smooth. Fold in 1 cup of the cookie crumbs (set aside the remaining crumbs for the garnish).

To assemble:

  1. Place the brownie layer on the bottom of a cake platter. Add 1/4 of the frosting and spread evenly. Top with one of the cake layers and repeat with another 1/4 of the frosting. Top with remaining cake layer and use the last 1/2 of the frosting to cover the cake completely.
  2. In a microwave safe bowl, combine the dark chocolate with the heavy cream. Heat over high for one minute. Remove and stir until smooth. Allow too cool for a couple minutes, then spread over the top of the frosted cake.
  3. Immediately add the reserved cookie crumbs to the top of the ganache. Add whole Oreos if desired, for a garnish. Allow ganache to set, then serve and enjoy!

Notes

  • Don't waste your yolks! Separate out the egg whites, then use the yolks to make Lemon Curd or an Apple Slab Pie.
  • Let the layers cool completely before assembling. If they're warm, they will make the frosting runny.
  • Store this Oreo Brownie Cake covered at room temperature. It's best enjoyed within 3 days.

Nutrition Information

Show Details
Calories 735kcal (37%) Carbohydrates 94g (31%) Protein 5g (10%) Fat 39g (60%) Saturated Fat 22g (110%) Polyunsaturated Fat 11g Cholesterol 78mg (26%) Sodium 247mg (10%) Fiber 2g (8%) Sugar 67g (134%)

Nutrition Facts

Serving: 16servings

Amount Per Serving

Calories 735 kcal

% Daily Value*

Calories 735kcal 37%
Carbohydrates 94g 31%
Protein 5g 10%
Fat 39g 60%
Saturated Fat 22g 110%
Polyunsaturated Fat 11g 65%
Cholesterol 78mg 26%
Sodium 247mg 10%
Fiber 2g 8%
Sugar 67g 134%

* Percent Daily Values are based on a 2,000 calorie diet.

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