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The Ultimate Homemade Chocolate Caramel Toffee Crunch Cake: Bakery Layers & Gooey Center

A decadent slice of chocolate caramel toffee crunch cake showing layers of dark chocolate cake, caramel filling, and crunchy toffee coating.
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Create a showstopper dessert with this recipe for a decadent, multi-textured cake. You will layer ultra-moist chocolate cake with rich salted caramel and top it with a satisfying homemade toffee crunch. This recipe delivers bakery-quality indulgence for your next celebration.

Ingredients

Scale
  • For the Moist Chocolate Cake Layers: 2 cups all-purpose flour
  • 1 3/4 cups granulated sugar
  • 3/4 cup unsweetened cocoa powder
  • 2 teaspoons baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 1 cup buttermilk, room temperature
  • 1/2 cup vegetable oil
  • 2 large eggs, room temperature
  • 1 teaspoon vanilla extract
  • 1 cup hot strong brewed coffee
  • For the Salted Caramel Sauce: 1 cup granulated sugar
  • 1/4 cup water
  • 1/2 cup heavy cream, warmed
  • 4 tablespoons unsalted butter, cut into pieces
  • 1 teaspoon sea salt
  • For the Toffee Crunch Topping: 1 cup granulated sugar
  • 1/2 cup unsalted butter
  • 1/4 cup water
  • 1/2 cup chopped almonds or pecans
  • 1 teaspoon baking soda
  • 1 cup semi-sweet chocolate chips
  • For Assembly & Frosting: 1 batch Chocolate Buttercream Frosting (use your favorite recipe)
  • Extra caramel sauce for drizzling

Instructions

  1. Prepare the Chocolate Cake: Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans. Whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt in a large bowl.
  2. Add the buttermilk, oil, eggs, and vanilla extract to the dry ingredients. Beat with an electric mixer on medium speed for two minutes. Carefully stir in the hot coffee until the batter is smooth and thin.
  3. Divide the batter evenly between the prepared pans. Bake for 30 to 35 minutes, or until a wooden pick inserted into the center comes out clean. Let the cakes cool in the pans for 10 minutes before inverting them onto a wire rack to cool completely.
  4. Make the Salted Caramel Sauce: Combine the sugar and water in a medium, heavy-bottomed saucepan over medium heat. Do not stir. Swirl the pan occasionally until the sugar dissolves and the mixture turns a deep amber color.
  5. Remove the pan from the heat. Carefully whisk in the warm heavy cream (it will bubble vigorously). Whisk in the butter until melted, then stir in the sea salt. Let the caramel cool until it thickens slightly, reserving half for filling and half for drizzling later.
  6. Make the Toffee Crunch Topping: Line a baking sheet with parchment paper or a silicone mat. Combine the sugar, butter, and water in a saucepan over medium heat. Stir until the butter melts and the sugar dissolves. Stop stirring.
  7. Cook until the mixture reaches a deep amber color, about 10 to 12 minutes. Remove from heat and quickly whisk in the chopped nuts. Then, quickly whisk in the baking soda (the mixture will foam up). Immediately pour the mixture onto the prepared baking sheet and spread thinly. Let it cool completely until hard.
  8. Once cool, break the toffee into small, irregular pieces. Melt the chocolate chips in a microwave-safe bowl in 30-second intervals, stirring until smooth. Dip some of the toffee pieces into the melted chocolate and place them back on the parchment paper to set.
  9. Assemble the Cake: Place one cooled cake layer on your serving plate. Spread a generous layer of your chocolate buttercream frosting over the top. Drizzle half of the reserved salted caramel sauce over the frosting.
  10. Place the second cake layer on top. Frost the entire cake with the remaining chocolate buttercream.
  11. Decorate: Drizzle the remaining caramel sauce over the top edge of the cake, allowing it to drip down the sides. Press the homemade toffee crunch pieces (both plain and chocolate-coated) around the sides and sprinkle them over the top center of the cake.

Notes

  • For the moistest cake, ensure your buttermilk, eggs, and coffee are at room temperature before mixing.
  • If you prefer a smoother caramel layer inside the cake, thin the filling caramel slightly with a teaspoon of hot water before spreading.
  • You can substitute store-bought toffee bits if you wish to skip making the homemade crunch, but the homemade version provides superior texture.

Nutrition

Find it online: https://www.unfoldrecipes.com/chocolate-caramel-toffee-crunch-cake/