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a loaf of sourdough discard banana bread cooling in a glass pan on a silver rack placed on a white and gray marble background
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4.58 from 7 votes

Sourdough Discard Banana Nut Bread

Ingredients

  • ½ cup chopped walnuts or pecans
  • 1 cup all-purpose flour
  • ½ cup whole wheat flour
  • ½ teaspoon salt
  • teaspoons ground cinnamon
  • ½ teaspoon baking soda
  • ¼ teaspoon baking powder
  • 1 large pastured egg
  • ¾ cup lightly packed brown sugar see Note
  • cup mashed overly ripe bananas about 3 medium-small bananas
  • ½ cup unfed sourdough discard stir down to remove bubbles before measuring
  • cup olive oil, plus more to grease the pan
  • 1 teaspoon vanilla extract

Instructions

  • Preheat the oven to 350°F. Generously grease a 9- by 5-inch loaf pan with a bit of olive oil.
  • As the oven heats, toast the nuts until they are fragrant but not dark, 5 to 10 minutes. Check them after 5 minutes. If they aren't ready, stir them and recheck every minute or two.
  • In a small bowl, whisk together the flours, salt, cinnamon, baking soda and baking powder.
  • In a large bowl, beat the egg until light. Add the sugar, mixing well. Stir in the mashed banana, sourdough discard, olive oil and vanilla.
  • Add the dry ingredients to the banana mixture and stir just until combined. Fold in the nuts.
  • Scrape the batter into the prepared pan and bake for 50 to 60 minutes, until a thin clean sharp knife inserted into the center comes out clean. Cool the loaf in the pan for 10 minutes before inverting onto a rack to cool completely. If necessary, run a knife along the edges of the pan to release the banana bread.

Notes

This banana bread is only slightly sweet. If you ordinarily reduce the amount of sugar in quick bread recipes, you may not want to reduce the sugar in this recipe by very much.