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+ servings
One layer chocolate cake

Single Layer Chocolate Cake

One layer chocolate cake topped with a caramel buttercream.

Course Dessert
Cuisine American
Keyword caramel buttercream, one bowl chocolate cake, one layer chocolate cake, single layer chocolate cake
Prep Time 10 minutes
Cook Time 33 minutes
Total Time 43 minutes
Servings 9 servings


  • 3/4 cup All Purpose Flour
  • 1/2 cup Sugar
  • 1/2 cup Light Brown Sugar
  • 1/2 cup Cocoa Powder
  • 1 teaspoon Baking Soda
  • 1/2 teaspoon Baking Powder
  • Pinch of salt
  • 1 Egg
  • 1/2 cup Vegetable Oil
  • 1/2 cup Sour Cream
  • 1/2 cup Hot Water
  • 2 oz Semi Sweet Chocolate Finely Chopped

Caramel Buttercream

  • 1/2 cup Unsalted Butter softened
  • 2 cups Powdered Sugar
  • 2 teaspoon Milk
  • 1 teaspoon Vanilla Extract
  • 2 tablespoon Caramel Sauce Store Bought or Homemade

Homemade Caramel Sauce

  • 1 cup Sugar
  • 1/2 cup Heavy Cream Room Temp
  • 7 tablespoon Butter Room Temp


Single Layer Chocolate Cake

  1. 1. Preheat oven to 350 degrees. Spray a 8 inch cake pan with Non-Stick baking spray.

    2. In a bowl, sift the flour, sugar, cocoa powder, brown sugar, baking soda, baking powder and salt together. Add in the sour cream, egg and vegetable oil, stir until just combined then add in hot water. Mix until well combined. Add in chopped chocolate.

    4. Pour the batter into the greased 8 inch cake pan and bake for 30-35 minutes or until a toothpick comes out clean.

    Chocolate Cake one layer

Caramel Buttercream

  1. 1. In a stand mixer, beat the butter, powdered sugar and milk together for about 3 minutes. Add additional milk if icing is too stiff.

    2. Add in 2 Tablespoons of caramel and 1 teaspoon of vanilla extract. Mix on medium speed for 5-6 minutes.

    3. Dollop the icing on the cake once the cake cools.

Caramel Sauce

  1. In a heavy bottomed sauce pan, add in sugar and melt over medium heat. Stir occasionally to make sure all of the sugar is melting evenly. Once the caramel reaches a light amber color, remove from heat and add in cubed, room temp butter slow. The caramel will bubble up and that's completely normal. Next add in the room temperature heavy cream and whisk until fully combined. Allow to cool before adding to buttercream. Store the rest of the caramel in the fridge for a later use.

    Easy Caramel Sauce