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Sourdough Banana Cake with Cream Cheese Frosting

A slice of moist sourdough banana cake with creamy white frosting on a wooden board.
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A moist and tender banana cake made with sourdough discard, topped with a tangy cream cheese frosting. This easy one-bowl recipe is perfect for using up ripe bananas.

Ingredients

Scale
  • 1 cup (200g) granulated sugar
  • 1/2 cup (113g) unsalted butter, softened
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup (240g) active sourdough starter or discard
  • 3 very ripe bananas, mashed
  • 1 1/2 cups (190g) all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 teaspoon ground cinnamon
  • For the Frosting:
  • 8 ounces (226g) cream cheese, softened
  • 1/2 cup (113g) unsalted butter, softened
  • 2 cups (240g) powdered sugar
  • 1 teaspoon vanilla extract

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
  2. In a large bowl, cream together the granulated sugar and softened butter until light and fluffy.
  3. Beat in the eggs one at a time, then stir in the vanilla extract.
  4. Add the sourdough starter and mashed bananas to the wet ingredients and mix until combined.
  5. In a separate bowl, whisk together the flour, baking soda, salt, and cinnamon.
  6. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
  7. Pour the batter into the prepared baking pan and spread evenly.
  8. Bake for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean.
  9. Let the cake cool in the pan for 10 minutes before inverting it onto a wire rack to cool completely.
  10. While the cake cools, prepare the frosting: In a medium bowl, beat together the softened cream cheese and butter until smooth.
  11. Gradually add the powdered sugar and vanilla extract, beating until the frosting is light and fluffy.
  12. Once the cake is completely cool, spread the cream cheese frosting evenly over the top.

Notes

  • For the ripest bananas, look for ones with plenty of brown spots.
  • To keep the cake tender for days, store it in an airtight container at room temperature. The frosting acts as a sealant.
  • You can add 1/2 cup of chopped nuts or chocolate chips to the batter for extra texture.

Nutrition

Find it online: https://mdlatdmm.com/sourdough-banana-cake/