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A piece of banana cake with mascarpone frosting and topped with 2 banana slices on a grey plate on a grey tablecloth. There's a fork next to it and a white cup in the background next to a white and blue dishtowel.
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5 from 2 votes

Easy Banana Cake Recipe

Easy Banana Cake - this fluffy and moist sheet cake is has a light mascarpone frosting on top and it ready in under 30 minutes! A perfect cake to use all those overripe bananas.
Prep Time10 mins
Cook Time20 mins
Total Time30 mins
Course: Dessert
Cuisine: American
Servings: 16
Calories: 307kcal


For the banana cake:

  • 1/2 cup unsalted butter room temperature
  • 1 cup granulated sugar
  • 2 large eggs room temperature
  • 1 1/2 cups mashed ripe bananas 3 medium ones
  • 1 cup buttermilk or 1 cup milk + 1 tbsp lemon juice
  • 1 tsp vanilla extract
  • 2 cups all-purpose flour
  • 1 tsp baking soda
  • 1/4 tsp salt

For the frosting:

  • 6 Tbsp unsalted butter room temperature
  • 1 1/2 cups confectioners' sugar sifted
  • 1 tsp vanilla extract
  • 4 oz cold mascarpone or cream cheese


  • Preheat your oven to 350°F (180°C). Grease a 9x13-inch baking pan. Set aside.
  • In the bowl of a stand mixer fitted with the paddle attachment, cream butter and sugar together at medium-high speed until light and fluffy, about 3-4 minutes.
  • Add eggs, mashed bananas, buttermilk, and vanilla extract. Mix at low speed until combined.
  • In a small bowl combine flour, baking soda, and salt.
  • Add flour mixture in three additions to the wet mixture, mix just until combined.
  • Pour batter into the baking dish and bake for 20-25 minutes. When the cake is done a skewer inserted in the middle should come out clean with only a few crumbs attached. Let the cake cool down completely before frosting it.
  • To make the frosting, beat together butter and confectioners' sugar in the bowl of a stand mixer fitted with the paddle attachment until light and fluffy.
  • Add vanilla extract and mascarpone and beat until blended. Frost cooled cake.


Calories: 307kcal | Carbohydrates: 41g | Protein: 4g | Fat: 15g | Saturated Fat: 9g | Cholesterol: 56mg | Sodium: 145mg | Potassium: 120mg | Fiber: 1g | Sugar: 27g | Vitamin A: 478IU | Vitamin C: 2mg | Calcium: 37mg | Iron: 1mg