Indulge in our decadent Chocolate Fudge Brownie Cake! Featuring rich fudge brownie layers, luxurious Kinder Bueno buttercream, and luscious chocolate sauce. Garnished with mini Kinder Buenos for an extra treat. Perfect for satisfying your chocolate cravings!

SUMMARISE AND SAVE THIS RECIPE
Try it! Sink your teeth into this decadent chocolate brownie cake, where every bite is a delicious mix of moist brownie and smooth, luscious buttercream. Topped with a glossy chocolate sauce and mini Kinder Buenos, it's a feast for the eyes and the stomach.
Why You'll Love My Chocolate Brownie Cake
Firstly, you're going to love this recipe for its irresistible chocolatey richness. The blend of fudgy brownie layers with the smooth Kinder Bueno buttercream offers a fantastic, deep chocolate flavor that's absolutely delicious. Each mouthful perfectly satisfying your chocolate cravings.
Similarly, the smooth buttercream complements the denser brownie base, ensuring that every mouthful is perfectly balanced not only in flavor but in feel. And finally it just looks great! This is the kind of brownie cake you can eat with your eyes.
Ingredients In My Chocolate Brownie Cake
For the Chocolate Brownie Layers:
- Unsalted Butter: Acts as a foundation for the brownies, providing a rich, creamy base that contributes to the overall texture and flavor.
- Sugar: Essential for sweetness, it also helps to create a tender crumb in the brownies by interacting with the other ingredients during baking.
- Cocoa Powder: This is the star ingredient for the chocolate flavor. It gives the brownies a deep, intense chocolate taste.
- Coffee Granules: A small but mighty ingredient, coffee granules intensify the chocolate flavor, adding a subtle complexity without a strong coffee taste.
- Vanilla Extract: It adds a layer of aroma and enhances the chocolate and buttery flavors, giving a well-rounded taste profile.
- Eggs: They bind the ingredients, add moisture, and help in creating a slightly fudgy texture.
- All-Purpose Flour: Provides structure to the brownies, ensuring they hold together well while remaining tender.
- Baking Powder: A leavening agent that helps the brownies rise a bit, contributing to a lighter texture.
- Salt: An essential flavor enhancer, salt balances the sweetness and brings out the richness of the chocolate.
For the Kinder Bueno Condensed Milk Buttercream:
This ingredients for this delicious buttercream are explained in the recipe post for the Kinder Bueno Condensed Milk Buttercream.
For the Chocolate Sauce:
Dark Chocolate: Chosen for its quality and flavor, it provides a rich, luxurious chocolate sauce.
Heavy Cream: Adds creaminess to the sauce, making it smooth, rich, and perfect for drizzling.
For Garnishing:
Mini Kinder Buenos: These not only add a decorative touch but also bring in an extra layer of chocolatey, nutty flavor that complements the overall dessert.
How To Make My Chocolate Brownie Cake
Preparing the Brownie Layers:
Start by preheating your oven and greasing and lining a square baking pan. Melt the butter and let it cool slightly. Sift cocoa powder into the melted butter.

Add sugar, vanilla, coffee granules and eggs to the butter and cocoa mixture. Beat until the mixture is smooth and glossy.

Sift in the flour, baking powder, and a pinch of salt. Stir until just combined, being careful not to overmix.

Pour the batter into the prepared pan and bake until done. Allow the brownie to cool in the pan for a bit, then transfer to a wire rack to cool completely.


Once cooled, trim the edges and cut the brownie into two equal-sized rectangles.

Making the Kinder Bueno Condensed Milk Buttercream:
Prepare the buttercream according to the recipe in the blog post on Kinder Bueno Condensed Milk Buttercream. Left over buttercream freezes very well for two months.
Preparing the Chocolate Sauce:
Combine dark chocolate and cream in a microwave-safe bowl . Heat in the microwave in short bursts, stirring between each until the chocolate is fully melted and the sauce is smooth. Let the sauce cool slightly before using.

Assembling the Cake:
Place one brownie layer on your serving plate. Pipe or spread a layer of the Kinder Bueno buttercream over it.

Gently place the second brownie layer on top of the buttercream. Pipe or spread additional buttercream on top of the second brownie layer, creating decorative swirls if desired.

Garnishing:
Drizzle the cooled chocolate sauce over the top of the cake, allowing some to drip down the sides. Place mini Kinder Buenos on top for decoration.

Serving:
Let the cake set a bit in the fridge before serving. Slice and serve, preferably with extra chocolate sauce on the side for an added indulgence. Enjoy your delicious, homemade Chocolate Fudge Brownie Cake!

My Top Tip
The most important tip for you when making this Chocolate Fudge Brownie Cake is to not overmix the brownie batter. When you add the flour, baking powder, and salt to your wet ingredients, mix just until you can't see any more dry flour. Overmixing at this stage can develop the gluten in the flour, leading to a tougher, less fudgy brownie texture.
You're aiming for that perfect balance between chewy and soft, which is the hallmark of a great brownie. So, remember: mix gently and just until combined for the best texture in your brownie layers. Enjoy the process and the delicious result!
Additions To The Recipe
- Nuts: Add chopped walnuts or pecans to the brownie batter for a crunchy texture and nutty flavor.
- Chocolate Chips: Stir in some chocolate chips for an extra chocolatey bite.
- Orange Zest: Add a bit of orange zest to the brownie batter or the chocolate sauce for a citrusy twist.
- Caramel Drizzle: Drizzle caramel sauce over the cake along with the chocolate sauce for a decadent addition.
- Sea Salt: Sprinkle a little sea salt over the top of the finished cake. The salt enhances the chocolate flavor and adds a gourmet touch.
More Chocolate Brownie Recipes
- Brownie Bites with Truffle Ganache Kisses
- Nutella Brownie Cupcakes
- Kit Kat Brownie Donuts
- Mug Brownie One Minute 2-Ingredients
Common Questions
Absolutely! If you're short on time or prefer the convenience, a boxed brownie mix can be a good substitute. Just follow the box instructions for baking, then proceed with the buttercream and assembly as directed in the recipe.
The coffee granules are used to enhance the chocolate flavor, but if you don't have them, it's okay to leave them out. The cake will still be delicious without them.
Store any leftover cake in an airtight container in the refrigerator. It should keep well for up to 3-4 days. Remember to let it come to room temperature before serving for the best flavor and texture.
Yes, you can bake the brownie layers a day ahead and keep them wrapped at room temperature. The buttercream can also be prepared in advance and refrigerated. Just bring it to room temperature before assembling the cake.
Yes, this cake can be frozen without the garnish. Wrap it well in plastic wrap and freeze. Thaw in the refrigerator overnight and add the garnishes before serving.

Chocolate Brownie Cake
INGREDIENTS
Fudge Brownie Layers
- ½ cup (½ cup) butter unsalted and melted
- 1 cup (1 cup) sugar
- ½ cup (½ cup) cocoa powder
- 1 teaspoon (1 teaspoon) instant coffee granules
- 3 teaspoon (3 teaspoon) vanilla extract
- 2 (2) egg large
- ½ cup (½ cup) all-purpose flour
- ¼ teaspoon (¼ teaspoon) baking powder
- ⅛ teaspoon (⅛ teaspoon) salt
Buttercream
- 2½ cups (2 ½ cups) buttercream Kinder Bueno Condensed Milk Buttercream
Chocolate Sauce
- 1 cup (1 cup) dark chocolate
- ½ cup (½ cup) heavy cream
Garnish
- 1 (1) Kinder Bueno or minis
INSTRUCTIONS
Preparation
- Pre-heat your oven to 350°F (180°C).
- Grease and line an 8-inch square baking pan with parchment paper.
Fudge Brownie Layers
- In a mixing bowl, add the melted butter.
- Sift cocoa powder over the butter using a mesh strainer.
- Add sugar, vanilla, coffee granules, and eggs to the bowl. Mix well with a hand whisk until the batter is smooth and glossy.
- Sift in the flour, baking powder, and salt.
- Gently mix with a silicone spatula until just combined, scraping the sides and bottom of the bowl. Avoid overmixing.
- Pour the batter into the prepared pan and bake for 15-17 minutes.
- Allow to cool in the pan on a wire rack for 10 minutes, then remove and cool completely.
- Trim the edges of the brownie and cut into two 4" x 8" pieces.
Assembly
- Place one brownie layer on a serving plate.
- Pipe two rows of ruffled swirls using the Kinder Bueno buttercream and a 1M piping tip.
- Gently place the second brownie layer on top.
- Pipe three rows of ruffled buttercream along the top of the cake.
Chocolate Sauce
- Combine the chocolate and cream in a microwave-safe jug.
- Microwave in 30-second intervals, stirring between each until smooth.
- Cool for 5 minutes before using.
Garnish
- Drizzle the chocolate sauce over the cake, allowing it to drip down the sides.
- Top with mini Kinder Bueno chocolates.
- Refrigerate until ready to serve.
Serve
- Serve with additional chocolate sauce on the side.








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