This Cookie Dough Brownie Cake combines rich, fudgy brownie layers with a creamy cookie dough filling and a smooth ganache topping. It’s a decadent dessert perfect for birthdays or any special celebration.
Author:Katie
Prep Time:40 minutes
Cook Time:25 minutes
Total Time:1 hour 30 minutes
Yield:12 servings 1x
Category:Dessert
Method:Baking
Cuisine:American
Diet:Vegetarian
Ingredients
Scale
1 and 1/2 cups vegetable oil
3 cups sugar
3 teaspoons vanilla extract
6 eggs
1 and 1/2 cups flour
1 cup cocoa powder
3/4 teaspoon baking powder
1/4 teaspoon salt
3 sticks unsalted butter, at room temperature
3/4 cup light brown sugar, packed
3 and 1/2 cups confectioners’ sugar
1 cup all-purpose flour (for filling)
3/4 teaspoon salt (for filling)
3 Tablespoons milk
2 and 1/2 teaspoons vanilla extract (for filling)
4 ounces semi-sweet chocolate, finely chopped
1/2 cup heavy whipping cream
1/4 cup light corn syrup
2 teaspoons vanilla extract (for ganache)
Extra chocolate chips, for garnish
Instructions
Preheat oven to 350°F (175°C) and prepare three 8-inch round pans with cooking spray and parchment paper.
In a large bowl, mix sugar and oil until well combined. Stir in eggs one at a time, then add vanilla extract.
In a separate bowl, whisk together flour, cocoa powder, baking powder, and salt.
Gradually add dry ingredients to the wet mixture in batches, stirring until just combined. Do not overmix.
Divide batter evenly among the prepared pans and bake for 20–25 minutes, or until a toothpick comes out with moist crumbs. Cool completely.
For the filling, beat butter and brown sugar until light and fluffy. Add confectioners’ sugar, then flour and salt, mixing well. Add milk and vanilla and beat until fluffy.
For the ganache, heat heavy cream in the microwave until hot. Add chopped chocolate and let sit 30 seconds. Stir until melted, then mix in corn syrup and vanilla. Set aside.
To assemble, place one brownie layer on a platter and spread 1 cup of cookie dough filling on top. Repeat with the second layer and another cup of filling.
Place the third brownie layer on top and chill the cake for 10 minutes.
Pour ganache over the top, spreading gently and allowing it to drip over the edges. Chill for 20 more minutes.
Pipe leftover cookie dough filling as decoration, sprinkle with chocolate chips, and drizzle with remaining ganache.
Notes
Let brownie layers cool completely before assembling to prevent melting the filling.
Do not overmix the brownie batter to maintain a fudgy texture.
You can make the layers ahead and freeze them until ready to assemble.
For an extra crunch, mix mini chocolate chips into the cookie dough filling.
Store the cake in the refrigerator for up to 4 days and bring to room temperature before serving.