Easy Banana Cake Recipe

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.

5 from 5 votes

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

Cook Time20

Total Time30

Course: Dessert

Cuisine: American

Servings:

Author: Julia Foerster

Ingredients

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

Cups - Metric

Instructions

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.

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