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Four square pieces of banana cake with white frosting and banana slices on top are displayed on a dark serving tray.

Banana Sheet Cake

Chef Jenn
Banana Sheet Cake is soft, moist, and full of ripe banana flavor with toasted walnuts and a simple cream cheese frosting. It is an easy homemade cake that is perfect for gatherings, potlucks, or everyday dessert.
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Prep Time 20 minutes
Baking Time 55 minutes
Total Time 1 hour 15 minutes
Course Dessert
Cuisine American
Servings 16 servings
Calories 518 kcal

Ingredients
  

For the cake

  • 1 cup cooking oil
  • 3 large eggs
  • 1 ½ cups sugar
  • ¾ cup sour cream
  • 4 large ripe bananas mashed
  • 2 teaspoons ground cinnamon
  • ½ teaspoon salt
  • 3 teaspoons baking soda
  • 3 ½ cups all-purpose flour
  • 1 cup walnuts toasted and chopped

For the cream cheese frosting

  • 8 ounces cream cheese or 1 block, room temperature
  • 2 cups powdered sugar
  • 2 teaspoons vanilla extract

Instructions
 

  • Preheat the oven to 350°F and position a rack in the center of the oven.
  • Grease a 9x13-inch baking dish or pan or spray it with nonstick cooking spray.
  • In a large bowl, whisk together the oil, sugar, eggs, and sour cream until smooth.
  • Mash the bananas with a fork or potato masher, then add the mashed bananas to the egg-sugar mixture and mix until fully combined.
  • Combine the cinnamon, salt, baking soda, and all-purpose flour in another bowl and whisk until combined.
  • Add the wet ingredients to the dry, and mix well until just combined. Then fold in the toasted chopped walnuts until evenly distributed.
  • Spread the batter evenly into the prepared pan.
  • Bake for 30-40 minutes, until the top is set and a toothpick or cake tester inserted in the center comes out clean.
  • Cool the cake completely in the pan before frosting.

For the Cream Cheese Frosting

  • Beat the cream cheese, powdered sugar, and vanilla extract until smooth and creamy with no lumps.
  • Spread the frosting evenly over the cooled cake.
  • Chill briefly to help the frosting set before slicing and serving.

Video

Notes

Chef Jenn’s Recipe Notes

  • Use very ripe bananas here. The darker they are, the better the flavor will be.
  • Toast the walnuts before adding them to the batter. It adds a lot more flavor and makes a noticeable difference.
  • Let the cake cool completely before frosting, or the cream cheese frosting will soften too much and slide around.
  • A perfectly baked cake will have a few crumbs clinging to the cake tester or toothpick. If it’s perfectly clean, your cake could be overcooked and too dry.

Nutrition

Serving: 1squareCalories: 518kcalCarbohydrates: 65gProtein: 7gFat: 27gSaturated Fat: 6gPolyunsaturated Fat: 8gMonounsaturated Fat: 12gTrans Fat: 0.1gCholesterol: 56mgSodium: 341mgPotassium: 231mgFiber: 2gSugar: 39gVitamin A: 332IUVitamin C: 3mgCalcium: 46mgIron: 2mg

A Note on Nutritional Information

Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed.

Keyword banana cake with cream cheese frosting, banana sheet cake, easy banana cake, sheet cake recipe
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