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Moist Sourdough Discard Banana Bread

A freshly baked loaf of moist sourdough banana bread with a golden-brown crust, sitting on a plate.

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I am so glad you are here. This easy recipe turns your sourdough discard and overripe bananas into a soft, moist, and flavorful loaf. It is a simple way to make delicious bread while reducing food waste.

Ingredients

Scale
  • 1 cup (227g) ripe mashed bananas (about 3 large)
  • 1/2 cup (113g) unsalted butter, melted
  • 3/4 cup (150g) granulated sugar
  • 1 large egg, room temperature
  • 1 teaspoon vanilla extract
  • 1 cup (225g) active sourdough discard (unfed starter)
  • 1 3/4 cups (210g) all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 teaspoon ground cinnamon
  • 1/2 cup mix-ins (optional: chocolate chips or chopped walnuts)

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour a 9×5 inch loaf pan, or line it with parchment paper.
  2. In a large bowl, mix the mashed bananas, melted butter, granulated sugar, egg, and vanilla extract until combined.
  3. Stir in the sourdough discard until the mixture is smooth.
  4. In a separate medium bowl, whisk together the flour, baking soda, salt, and cinnamon.
  5. Gradually add the dry ingredients to the wet ingredients, mixing only until just combined. Do not overmix the batter.
  6. If using, gently fold in your chocolate chips or nuts.
  7. Pour the batter into the prepared loaf pan.
  8. Bake for 50 to 65 minutes, or until a toothpick inserted into the center comes out clean or with moist crumbs attached.
  9. Let the bread cool in the pan for 10 minutes before carefully transferring it to a wire rack to cool completely before slicing.

Notes

  • Use very ripe, spotty bananas for the best natural sweetness and moisture in this recipe.
  • This recipe works well with unfed sourdough discard, making it a great no-waste baking project.
  • For extra flavor, add 1/2 teaspoon of ground nutmeg along with the cinnamon.
  • If your loaf browns too quickly, loosely tent it with aluminum foil for the last 15 minutes of baking.

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