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Ultimate Caramel Toffee Crunch Layer Cake

Close-up of a thick slice of caramel crunch cake showing three layers of sponge, caramel filling, and nuts, topped with dripping caramel sauce.

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You create a decadent Caramel Crunch Cake featuring moist vanilla layers, rich homemade caramel sauce, and a satisfying crunchy toffee topping. This recipe is perfect for celebrations.

Ingredients

Scale
  • 2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1 cup milk
  • 1/2 cup unsalted butter, softened
  • 2 large eggs
  • 2 teaspoons baking powder
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt
  • 1 cup unsalted butter (for caramel)
  • 2 cups packed brown sugar
  • 1/2 cup heavy cream
  • 2 teaspoons vanilla extract (for caramel)
  • Pinch of salt (for caramel)
  • 1 cup toffee bits or crushed toffee candy
  • 1 cup heavy cream (for frosting)
  • 4 cups powdered sugar (for frosting)

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans.
  2. In a large bowl, whisk together the flour, granulated sugar, baking powder, and salt.
  3. In a separate bowl, mix the softened butter, milk, eggs, and 1 teaspoon of vanilla extract.
  4. Gradually add the wet ingredients to the dry ingredients, mixing until just combined. Do not overmix.
  5. Divide the batter evenly between the prepared pans. Bake for 30 to 35 minutes, or until a toothpick 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.
  6. Prepare the Homemade Caramel Sauce: In a medium saucepan over medium heat, melt the 1 cup of butter with the brown sugar. Stir constantly until the sugar dissolves and the mixture bubbles.
  7. Stir in the 1/2 cup of heavy cream and a pinch of salt. Boil gently for 1 minute, stirring occasionally. Remove from heat and stir in 2 teaspoons of vanilla extract. Set aside to cool slightly. This will be your gooey caramel filling.
  8. Prepare the Caramel Crunch Frosting: Beat the 1 cup of butter until creamy. Gradually beat in the powdered sugar until smooth. Slowly add the 1 cup of heavy cream and beat until the frosting is light and fluffy.
  9. Assemble the cake: Place one cooled cake layer on a serving plate. Spread half of the cooled caramel sauce over the layer. Sprinkle generously with half of the toffee bits.
  10. Place the second cake layer on top. Frost the top and sides of the entire cake with the caramel crunch frosting.
  11. Drizzle the remaining caramel sauce over the top of the cake, allowing it to drip down the sides. Sprinkle the remaining toffee bits over the top for the final crunch.

Notes

  • For an extra crunchy texture, you can substitute half of the toffee bits with crushed cornflakes mixed with a tablespoon of melted butter and a sprinkle of sugar.
  • If you want a salted caramel flavor, add 1/2 teaspoon of fine sea salt to the caramel frosting.
  • Make sure the cake layers are completely cool before frosting to prevent the frosting from melting.

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