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4.49 from 37 votes
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Chocolate Banana Cake

Rich, moist chocolate banana cake with my favorite sour cream chocolate frosting.
Prep Time10 minutes
Cook Time30 minutes
Total Time40 minutes
Cuisine: American
Keyword: banana, cake, chocolate, Chocolate Banana Cake, chocolate/banana, from scratch, homemade, Ideas for baking with ripe bananas, sour cream chocolate frosting
Servings: 12
Calories: 560kcal
Author: Michaela Kenkel

Ingredients

For the Cake:

  • 1/2 cup butter softened
  • 3/4 cup sugar
  • 3/4 cup brown sugar
  • 2 eggs
  • 2 teaspoons vanilla extract
  • 1 teaspoon salt
  • 1 teaspoon baking soda
  • 1 teaspoon cinnamon
  • 2 cups flour
  • 1/4 cup dark cocoa powder
  • 1 1/2 cups smashed ripe banana (about 3)

For the Frosting:

  • 12 oz. semi-sweet chocolate chips or squares
  • 8 Tablespoons. butter
  • 1 cup sour cream
  • 2 teaspoons vanilla
  • ½ teaspoon salt
  • 5 cups confectioners sugar

Instructions

  • For the Cake: Preheat oven to 350 degrees. Grease a 9x13 baking dish. Cream together butter and sugars until smooth. Add eggs, one at a time, beating after each. Blend in mashed bananas, vanilla and beat until creamy. Whisk together in a separate bowl the flour, cocoa powder, baking soda, cinnamon and salt. Slowly incorporate mixture into the wet ingredients. Combine well and pour into prepared baking dish. Bake for 30 minutes or until toothpick inserted in center comes out clean. Cool completely.
  • For the Frosting: Melt the chocolate with butter on low heat until smooth. Remove from heat and pour into mixer. Blend in the sour cream, vanilla and salt. Gradually add the sugar until it is your desired spreading consistency. Whip until smooth. NOTE: This recipe makes a very generous amount of frosting. I like to have a thick layer on my cakes. If you don't want a thick frosting layer, simply cut the recipe in half.

Nutrition

Serving: 1g | Calories: 560kcal | Carbohydrates: 89g | Protein: 4g | Fat: 23g | Saturated Fat: 14g | Polyunsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 66mg | Sodium: 413mg | Fiber: 3g | Sugar: 70g