When you bake sourdough bread using a homemade starter, you'll eventually end up with so much of it that you'll need to discard some to keep the amount manageable.  You can compost the discard, or use it up in a recipe like this banana bread. You won't notice much difference in flavor; what you will notice is a slightly denser texture and an almost savory flavor from the use of olive oil, plus delicate sweetness from maple syrup.

Martha Stewart Living, March 2021


Credit: Johnny Miller

Recipe Summary

15 mins
1 hr 25 mins
Makes 1 loaf


Ingredient Checklist


Instructions Checklist
  • Preheat oven to 350°F. Coat a 9-by-5-inch loaf pan with olive oil or cooking spray. Whisk together flour, cinnamon, nutmeg, baking powder, baking soda, and salt.

  • Slice 2 thin lengthwise slices from one banana and set aside (optional); mash unsliced portion of that banana with 2 more bananas. Measure 1 1/4 cups mashed banana into a bowl (if you don't have enough, mash in remaining one); whisk in sourdough discard to combine. Whisk in oil, maple syrup, and eggs. Stir in dry ingredients. Transfer to prepared pan. Top with reserved banana slices, gently pressing into batter slightly to adhere. Sprinkle with sugar, for a crackly crust.

  • Bake until a tester inserted into center of loaf comes out clean, 1 hour to 1 hour, 10 minutes. Let cool in pan on a wire rack 15 minutes, then transfer directly to rack and let cool completely. Banana bread is best served the day it's baked, but can be tightly wrapped in parchment-lined foil and stored at room temperature up to 2 days.