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Delicious double chocolate banana layer cake with chocolate frosting and banana slices.

Double Chocolate Banana Layer Cake

A delightful dessert that combines rich chocolate flavors with the natural sweetness of ripe bananas, featuring moist layers filled with chocolate chips.
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Course Cake, Dessert
Cuisine American
Servings 12 servings
Calories 350 kcal

Ingredients
  

Cake Ingredients

  • 1.5 cups mashed ripe bananas Adds natural sweetness and moisture to the cake.
  • 2 cups all-purpose flour The foundation for a tender crumb.
  • 0.75 cups cocoa powder Rich, unsweetened chocolate flavor that intensifies the cake.
  • 1.5 tsp baking powder Helps the cake rise and achieve a fluffy texture.
  • 1 tsp baking soda Works with the acidic buttermilk for extra lift.
  • 0.5 tsp salt Balances the sweetness and enhances the flavors.
  • 1 cup sugar Sweetens the cake beautifully.
  • 0.5 cup brown sugar Adds depth and a hint of caramel flavor.
  • 0.75 cups vegetable oil Keeps the cake moist and tender.
  • 2 units eggs Binds the ingredients together and contributes to the structure.
  • 1 tsp vanilla extract Adds a hint of warmth and complexity.
  • 0.75 cups buttermilk Ensures a soft and tender crumb with a slight tang.
  • 1 cup chocolate chips For extra bursts of chocolate in every bite.

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C) and prepare two 8-inch cake pans by greasing and flouring them.
  • In a large mixing bowl, combine the mashed ripe bananas, sugar, brown sugar, vegetable oil, eggs, and vanilla extract. Beat the mixture until smooth and well-blended.
  • In another bowl, whisk together the all-purpose flour, cocoa powder, baking powder, baking soda, and salt.
  • Gradually add the dry ingredients to the wet banana mixture, alternating with the buttermilk. Mix until just combined.
  • Gently fold in the chocolate chips.
  • Divide the batter evenly between the two prepared cake pans and smooth the tops with a spatula.

Baking

  • Bake in the preheated oven for 25–30 minutes or until a toothpick inserted into the center comes out clean.
  • Allow the cakes to cool completely in the pans for about 10 minutes before transferring them to a wire rack to cool completely.

Frosting

  • Layer and frost the cakes as desired, possibly using chocolate ganache or whipped cream frosting.

Notes

For best flavor, ensure bananas are very ripe. Consider using dark chocolate chips for a richer flavor. If short on buttermilk, mix regular milk with a tablespoon of vinegar or lemon juice.
Keyword Banana Dessert, chocolate cake, Double Chocolate Cake, Easy Baking, Layer Cake