Chocolate Toffee Crunch Cake Recipe — Decadent Layered Dessert

Ingredients

For the Chocolate Cake:

• 1 ½ cup coffee (or water)
• ¾ cup unsalted butter
• ½ cup unsweetened Dutch-processed cocoa powder
• 3 large eggs
• ¾ cup buttermilk
• 2 tablespoons grapeseed or canola oil
• 2 teaspoons vanilla extract
• 3 cups all-purpose flour
• 2 cups granulated sugar
• 1 ½ teaspoons baking soda
• ½ teaspoon baking powder
• 1 teaspoon salt
• 1 teaspoon cinnamon

For the Milk Chocolate Swiss Meringue Buttercream:

• 6 large egg whites
• 2 cups granulated sugar
• 3 cups unsalted butter, softened
• 2 teaspoons vanilla extract
• 5 ounces milk chocolate, melted and cooled

For the Toffee Crunch:

• 4 tablespoons unsalted butter
• ½ cup granulated sugar
• ½ teaspoon cinnamon
• ¼ teaspoon salt

For the Cinnamon Simple Syrup:

• ½ cup granulated sugar
• ½ cup water
• 1 cinnamon stick, crushed

Instructions

Make the Chocolate Cake:

1. Preheat the oven to 350°F. Grease and flour three 8-inch round pans and set aside.
2. Place the coffee, butter, and cocoa in a saucepan and melt over medium-low heat. Stir to combine and remove from the heat.
3. Whisk together the eggs, buttermilk, oil, and vanilla in a bowl and set aside.
4. In a large bowl, whisk the flour, sugar, baking soda, baking powder, salt, and cinnamon. Add the warm cocoa mixture and stir to combine. Add the buttermilk mixture and whisk until smooth.
5. Divide the batter evenly between the prepared pans. Bake 30–35 minutes, or until a toothpick inserted into the center comes out clean.
6. Cool the cakes on a wire rack for 15–20 minutes before removing from pans. Cool completely before filling and frosting.

Make the Milk Chocolate Swiss Meringue Buttercream:

1. Combine egg whites and sugar in the bowl of an electric mixer and whisk gently to combine.
2. Set the bowl over a pan of simmering water and whisk constantly until the mixture reaches 160°F on a thermometer. Remove from heat.
3. Return to the mixer and whip on high for 8–10 minutes until stiff, glossy peaks form and the bowl returns to roughly room temperature.
4. Switch to the paddle attachment. With the mixer on low, add the softened butter a few tablespoons at a time until incorporated.
5. Add vanilla and beat on medium until silky and smooth, about 3–5 minutes.
6. Stir in the melted, cooled milk chocolate until the buttercream is even and smooth.

Make the Toffee Crunch:

1. Line a baking sheet with parchment or a silicone mat and set aside.
2. Melt the butter in a saucepan over medium heat. Stir in the sugar and bring to a boil. Whisk constantly and cook until golden, about 5 minutes.
3. Remove from heat and stir in cinnamon and salt. Pour the toffee onto the prepared sheet and quickly spread into a thin layer. Allow to cool, then break into small pieces.

Make the Cinnamon Simple Syrup:

1. Combine sugar and water in a saucepan and bring to a boil over medium-high heat.
2. Reduce to a simmer, add the crushed cinnamon stick, and simmer 5–10 minutes. Remove from heat, cool, and strain out the cinnamon stick before using.

Assemble the Cake:

1. Brush each cake layer with warm cinnamon syrup (reheat gently if needed).
2. Place the bottom layer on a cake board. Spread about ¾ cup buttercream over the layer, sprinkle a generous amount of toffee bits (about 1/3 cup) and gently press them into the filling. Add about ¼ cup buttercream on top to secure. Repeat with the next layer.
3. Frost the entire cake smoothly and use star and round piping tips to create knit-like patterns on the sides for a cozy finish.

Tips for piping success:

• DO: Have fun and get creative.
• DON’T: Overdo caffeine before decorating.
• DO: Score faint guide lines with an offset spatula for straighter piping.
• DON’T: Stress if it’s not perfect—handmade details are charming.
• DO: Position yourself at eye level with the cake while piping for better control.
• DO: Practice on parchment with different tips and patterns before working on the cake.