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Hazelnut Toffee Crumb Cake

A brownie like chocolate cake topped with a buttery crumble made with hazelnuts, brown sugar and toffee. Chocolate cake perfection.
Prep Time10 minutes
Cook Time45 minutes
Total Time55 minutes
Course: Dessert
Cuisine: American
Servings: 12

Ingredients

Chocolate Cake

  • 1 cup of all purpose flour
  • 1/2 cup of natural unsweetened cocoa powder
  • 1 teaspoon of baking powder
  • 1 teaspoon of baking soda
  • 1 teaspoon of salt
  • 3/4 cup of granulated sugar
  • 1/4 cup of brown sugar
  • 3/4 cup of a neutral oil
  • 2 large eggs
  • 1 teaspoon of pure vanilla extract
  • 1/2 cup of freshly brewed coffee

Hazelnut Toffee Crumble

  • 3/4 cup of brown sugar
  • 1/2 cup of hazelnuts, chopped
  • 1/2 cup of toffee bits
  • 1 teaspoon of ground cinnamon
  • 1 1/4 cups of all purpose flour
  • 1/2 cup of butter, melted

Instructions

Prep the cake...

  • Brew a fresh pot of coffee
  • Preheat your oven to 350 degrees and grease a 9” round cake pan or 11”x7” baking dish and line with parchment paper
  • Whisk 1 cup of all purpose flour with 1/2 cup of natural unsweetened cocoa powder, 1 teaspoon of baking powder, 1 teaspoon of baking soda and 1 teaspoon of salt in a large bowl 
  • In a separate bowl, whisk 3/4 cup of granulated sugar, 1/4 cup of brown sugar, 3/4 cup of a neutral oil, 2 large eggs and a teaspoon of pure vanilla extract until fully combined 
  • Add the wet ingredients to the dry ingredients and mix until just combined 
  • Add the 1/2 cup of fresh coffee and mix until evenly distributed
  • Transfer the batter into the prepared cake pan

Prep the crumble...

  • Combine 3/4 cup of brown sugar with 1/2 cup of chopped hazelnuts, 1/2 cup of toffee bits, 1 teaspoon of ground cinnamon and 1 1/4 cups of all purpose flour in a small bowl
  • Add 1/2 cup of melted butter and mix until large crumbs form

Assemble and bake...

  • Sprinkle the crumble evenly over the cake batter 
  • Bake the cake in a 350 degree oven for 44-48 minutes or until a toothpick will come out of the center clean
  • Transfer the cake pan onto a cooling rack and let the cake cool completely before transferring the cake out of the baking dish