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Brownie Cake

Brownie Cake


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  • Author: Kathryne Taylor
  • Total Time: 3 hours 40 minutes (includes cooling and chilling)
  • Yield: One 6-inch cake (serves approx. 8–10) 1x
  • Diet: Vegetarian

Description

A decadent twist on classic brownies, this brownie cake is layered with rich, fudgy brownie rounds and whipped chocolate and vanilla cream cheese frosting. It’s a perfect crowd-pleaser and beginner-friendly showstopper for birthdays, holidays, or anytime indulgence.


Ingredients

Scale

Brownie Layers

  • 1 1/2 cups (340g) unsalted butter, melted
  • 1 1/2 cups (300g) granulated sugar
  • 1 1/2 cups (300g) light brown sugar, packed
  • 6 large eggs, room temperature
  • 1 tablespoon vanilla extract
  • 1 cup (80g) unsweetened cocoa powder (preferably Dutch-processed)
  • 1 teaspoon fine sea salt
  • 1 3/4 cups (210g) all-purpose flour

Frosting

  • 1 cup (227g) unsalted butter, room temperature
  • 8 oz (226g) cream cheese, room temperature
  • 6 cups (720g) powdered sugar
  • Tiny pinch of salt
  • 1/4 cup (60mL) heavy whipping cream, room temperature (reserve 1 tablespoon for chocolate frosting)
  • 2 teaspoons vanilla bean paste
  • 1/4 cup (20g) unsweetened cocoa powder

Instructions

  1. Make the Brownie Batter: Melt the butter and mix it thoroughly with both sugars and the eggs in a large bowl. Beat until the mixture becomes pale, fluffy, and ribbons off the whisk, which helps incorporate air and structure.
  2. Incorporate Dry Ingredients: Add the cocoa powder and salt, whisking again until the mixture becomes dark and glossy. Stir in the flour just until combined to prevent overmixing and maintain a fudgy texture.
  3. Bake the Brownies: Spread the batter evenly in a greased and parchment-lined 11×15 inch sheet pan. Bake at 325°F (163°C) for about 25 minutes until the edges are set and the center is no longer wet but still soft to the touch.
  4. Cool and Cut Layers: Allow the brownies to cool for 30–60 minutes, then refrigerate for easier cutting. Using a 6-inch cake ring or template, cut four round layers and set aside the scraps for layering.
  5. Prepare the Frosting: Whip the butter until pale and fluffy, then add the cream cheese and blend until smooth. Gradually mix in the powdered sugar and a pinch of salt, followed by the heavy cream and vanilla bean paste until fluffy and spreadable.
  6. Make the Chocolate Frosting: Take one-third of the prepared frosting and mix in cocoa powder and the reserved tablespoon of cream. Stir until smooth to create the chocolate layer.
  7. Assemble the Cake: Place one brownie round on a flat surface. Spread a layer of chocolate frosting, top with brownie chunks, and then a layer of vanilla frosting. Add the next brownie round and repeat the process until all layers are stacked.
  8. Frost and Decorate: Frost the entire cake with the remaining vanilla frosting. Add dabs of chocolate frosting around the cake and swirl gently to create a marbled effect. Top with leftover brownie chunks for extra texture.

Notes

  • Chill the frosting slightly if it becomes too soft while assembling.
  • For cleaner cuts, refrigerate the assembled cake for at least an hour before slicing.
  • You can also freeze individual slices for easy portioning later.
  • If you prefer a less sweet finish, reduce powdered sugar or substitute with Swiss meringue buttercream.
  • Prep Time: 45 minutes
  • Cook Time: 25 minutes
  • Category: Cakes
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice (based on 8 servings)
  • Calories: 960 kcal
  • Sugar: 141g
  • Sodium: 605mg
  • Fat: 23g
  • Saturated Fat: 8g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 179g
  • Fiber: 4g
  • Protein: 12g
  • Cholesterol: 209mg