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A decadent slice of caramel toffee crunch cake topped with gooey caramel drizzle and crushed toffee bits, served on a dessert plate with a fork.

Caramel Toffee Crunch Cake – Gooey, Crunchy & Totally Addictive!

This Caramel Toffee Crunch Cake is a dessert lover’s dream! Moist layers of buttery cake are swirled with rich caramel and studded with crunchy toffee bits, then topped with a luscious caramel glaze. It’s the perfect blend of gooey sweetness and irresistible crunch. Ideal for holidays, potlucks, or anytime you want to wow a crowd with minimal effort and maximum flavor!
Prep Time 25 minutes
Cook Time 30 minutes
Total Time 1 hour 10 minutes
Course Dessert
Cuisine American with a modern twist
Servings 10 slices
Calories 420 kcal

Equipment

  • Two 8-inch cake pans
  • Mixing bowls
  • Electric mixer or whisk
  • Saucepan for caramel
  • Wire cooling rack
  • Spatula
  • Parchment paper
  • Cake stand or plate

Ingredients
  

For the Cake:

  • 2½ cups all-purpose flour
  • 2 tsp baking powder
  • ½ tsp salt
  • 1 cup unsalted butter (room temp)
  • 1½ cups granulated sugar
  • 4 large eggs
  • 1 tbsp vanilla extract
  • 1 cup whole milk

For the Caramel Sauce:

  • 1 cup granulated sugar
  • ½ cup heavy cream
  • 6 tbsp unsalted butter
  • ½ tsp sea salt (optional)

For the Topping:

  • 1 cup crushed toffee bits (e.g., Heath bars or homemade)
  • Optional: chopped pecans, whipped cream, chocolate drizzle

Instructions
 

  • Preheat oven to 350°F (175°C). Grease and line cake pans with parchment.
  • Mix dry ingredients: whisk flour, baking powder, and salt in a bowl.
  • Cream butter and sugar until light and fluffy. Add eggs one at a time, then vanilla.
  • Alternate adding dry mix and milk to the wet ingredients, starting and ending with dry.
  • Divide batter between pans and bake for 25–30 minutes. Use toothpick test for doneness.
  • Cool cakes in pans for 10 minutes, then transfer to wire racks.
  • Make caramel sauce: melt sugar in a saucepan until amber. Stir in butter, then cream. Add salt. Let cool slightly.
  • Assemble cake: layer cake, drizzle caramel, sprinkle toffee. Repeat. Finish with caramel and toffee on top.
  • Optional toppings: add whipped cream, nuts, or chocolate drizzle before serving.

Notes

  • Use room-temperature ingredients for a smoother batter and better rise.
  • Let caramel cool slightly before layering to avoid soggy cake.
  • For cleaner slices, chill the cake before cutting.
  • Store leftovers in an airtight container for up to 4 days.
  • Freeze individual slices wrapped tightly for up to 2 months.
  • Customize with seasonal flavors like pumpkin spice or apple chunks.
Keyword birthday cake, Caramel cake, Holiday Cake, indulgent baking, layered dessert, toffee crunch