Fudgy Brownie Cake As seen on Butternut bakery Bookmark recipe Print recipe Download recipe Share Total Time 1 hour 40 minutes + 1 hour chilling Prep Time 1 hour Cook Time 40 minutes Rating 5 out of 5 stars (12) Ingredients 10-12 slices 1 1/2 cups (330g) unsalted butter4 oz semisweet chocolate, chopped1 1/2 cups (300g) granulated sugar1 cup (200g) light brown sugar, packed7 large eggs, room temp1 tsp vanilla extract1 cup (128g) all purpose flour1 cup (100g) unsweetened cocoa powder1 tsp salt1 cup (220g) unsalted butter, room temp4 oz full fat cream cheese, room temp1/2 cup (50g) unsweetened cocoa powder4 cups (480g) powdered sugar1 tsp vanilla extractPinch of salt4 oz semisweet chocolate, chopped1/2 cup heavy cream Calories How would you rate this recipe? 1 stars 2 stars 3 stars 4 stars 5 stars Preparation Inline ingredients (beta) Cook mode Click to complete Step 1 *If you plan on baking brownies for garnish, do that first so they have time to chill and set. Step 2 Preheat the oven to 350F and prep (3) 6″ round cake pans or (3) 8″ round cake pans. Coat the entire inside with a thin layer of nonstick spray, then cover the bottom with a round sheet of parchment paper and line the sides with additional strips of parchment paper. The cake will stick to the sides of the pan otherwise, so make sure the entire inside is covered in parchment paper. Step 3 In a heatproof bowl, add the butter and 4 oz chopped chocolate. Melt in 30 second intervals in the microwave until smooth. Set aside to cool. Step 4 In a separate bowl, whisk together the flour, cocoa powder, and salt. Set aside. Step 5 In a large mixing bowl, add the sugars, vanilla, and eggs (ensuring they’re at room temperature). Vigorously whisk either by hand or using an electric mixer. Whisk for about 2-3 minutes, or until the mixture lightens in color and turns frothy/bubbly. Step 6 Continue mixing as you slowly pour in the cooled butter and chocolate. Whisk until combined. Step 7 Sift in the dry ingredients and mix until smooth (careful not to over mix). The batter should be thin, but not watery. Step 8 Evenly distribute the batter between the three cake pans. For 6″ cakes, bake for 35-40 minutes. For 8″ cakes, bake for 30-35 minutes. Step 9 You know they’re ready when they’ve puffed in the center with deep cracks throughout the surface. Poke a toothpick into one of the cracks and test for doneness. It should come out with thick and somewhat dry streaks of batter (see pictures in post for reference). Step 10 Allow the cakes to cool inside the pan for about 30 minutes, then turn them out onto a cooling rack. You may need to run a knife between the parchment paper and inside of the pan to help release them. Step 11 Let the cakes cool completely before assembling. To speed up the process, chill the cakes in the refrigerator for about one hour. You can also chill them overnight. Just let them cool completely at room temp before wrapping in plastic wrap and storing in the refrigerator. Step 12 In a bowl using a hand or stand mixer with the whisk attachment, mix together the room temperature butter and cream cheese until smooth. Step 13 Mix in the cocoa powder, followed by the powdered sugar one cup at a time. Step 14 Mix in the vanilla and salt. If the frosting is too thick or dry, mix in 1-2 tablespoons of milk as needed. Step 15 Spread a layer of frosting between each cake layer. Then before frosting the outside of the cake, place the cake in the refrigerator for about 20 minutes to allow the center layers to set. Step 16 Frost the outside of the cake, smooth out the sides and top, and return the cake to the refrigerator while you make the ganache. Step 17 Add the chopped chocolate to a bowl and the heavy cream to a heatproof container, like a measuring glass. Step 18 Heat the heavy cream in the microwave for about 1 minute, or until steaming and bubbling. Step 19 Pour the hot cream over the chocolate and let it sit for 30 seconds, ensuring all of the chocolate is submerged in the cream. Step 20 Then whisk together until completely smooth and glossy. Let it cool for about 5 minutes. Step 21 Pour the ganache into the very center of the top of the cake, then use an offset spatula or spoon to push the ganache out towards the edges to allow it to drip down the sides. Step 22 Top the cake with bite-sized brownie pieces, or leave it as is. Store the cake in the refrigerator until you’re ready to serve. Enjoy! Chef’s notes Properly measure the dry ingredients – I say this in every post, and for good reason. It’s the number one reason why most recipes fail.Room temperature eggs – It is very important to use room temperature eggs for two reasons.Whipped eggs and sugar – To continue the previous tip, the second reason to use room temperature eggs is for the whipping process.Carefully mix – I like to mix this cake by hand because it’s much easier to control the amount of force applied to the batter.For a good fudgy brownie, the toothpick test never works.