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Simple Banana Cake with Sour Cream Frosting |

Simple Banana Cake with Sour Cream Frosting


  • 1 box vanilla cake mix
  • 3/4 cup water
  • 1/4 cup oil
  • 3 whole eggs
  • 3/4 tsp. baking soda
  • 1 tsp baking powder
  • 4 very ripe mashed bananas
  • 2 1/2 cup powdered sugar
  • 1/3 cup sour cream
  • 1/4 cup butter, softened
  • 3/4 tsp. vanilla


  1. In a large bowl, add the cake mix, water, oil, eggs, baking soda, and baking powder.
  2. Beat with a mixer for 2 minutes on medium speed. Add bananas and blend well.
  3. Grease & flour a 9 x 13 pan. Add batter to the pan and bake following the instructions on box.
  4. Cool cake after baking.
  5. In another bowl, add the powdered sugar, sour cream, butter, and vanilla. Beat with an electric mixer for 2 minutes, or until smooth and fluffy.
  6. Frost cake with frosting. Store cake in the fridge.
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