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Delicious homemade banana sheet cake with creamy frosting.

Banana Sheet Cake

A moist banana sheet cake topped with fluffy cream cheese frosting, perfect for any occasion.
Print it Pin Recipe
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 12 servings
Course: Dessert, Snack
Cuisine: American
Calories: 320
Ingredients Method Notes

Ingredients
  

For the Cake
  • ½ cup unsalted butter (softened) Make sure it's softened for easy creaming.
  • 1 ½ cups granulated sugar
  • 2 large eggs
  • 1 cup sour cream Can be replaced with Greek yogurt.
  • 1 teaspoon vanilla extract
  • 2-3 pieces overripe bananas (smashed) Use very ripe bananas for sweetness.
  • 2 cups all-purpose flour Can substitute with almond flour for a gluten-free option.
  • 1 teaspoon baking soda
  • ½ teaspoon salt
For the Frosting
  • ½ cup unsalted butter (room temperature) Ensure at room temp for easy mixing.
  • 8 oz. cream cheese (room temperature)
  • 1 teaspoon vanilla extract
  • 3 cups powdered sugar
  • 1-2 tablespoons heavy whipping cream Adjust for desired frosting consistency.
  • to taste Crushed pecans (optional) Can be omitted or substituted with other nuts.

Method
 

Preparation
  1. Preheat the oven to 350 degrees F and prepare a 9x13 baking dish by spraying it generously with non-stick spray.
  2. In a stand mixer, cream together the softened butter and granulated sugar for about 3-4 minutes until light and fluffy.
  3. Add in the eggs, sour cream, and vanilla extract, mixing just until combined.
  4. Incorporate the mashed bananas and mix briefly until well combined.
  5. In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add this mix into the banana mixture until no dry spots remain—avoid overmixing.
  6. Pour the batter into the prepared baking dish and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
  7. Once baked, let the cake cool completely on a wire rack.
  8. While the cake is cooling, prepare the frosting by creaming the butter and cream cheese together for about 3-4 minutes until smooth.
  9. Add the vanilla extract and powdered sugar, mixing on low speed until combined, scraping the sides and bottom of the bowl.
  10. Add in the heavy whipping cream and mix on high speed for 3-4 minutes until fluffy.
  11. Frost the cooled cake generously with the cream cheese frosting, smoothing it out on top. Sprinkle with crushed pecans if desired.

Notes

Make sure bananas are very ripe to enhance the sweetness. Allow cooling of the cake before frosting. For variations, consider adding chocolate chips or a splash of cinnamon.