two slices of sourdough banana bread on white plate

Classic Sourdough Banana Bread

  • Author: Katie Shaw, Heart’s Content
  • Prep Time: 15 minutes
  • Cook Time: 60 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 1 loaf 1x
  • Category: quick bread
  • Method: baking
  • Cuisine: American


Sourdough starter adds a mild tang to a classic banana bread recipe that’s moist, sweet, and delicious.



  • 1/3 cup softened butter
  • 1 cup white sugar
  • 1 teaspoon vanilla
  • 1 egg
  • 3 bananas, mashed
  • 1 cup discard sourdough starter, stirred
  • 1 1/2 cups all purpose flour
  • 1/4 teaspoon salt
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda


1.  Preheat oven to 350.  Prepare a loaf pan my greasing with vegetable oil spray or butter.

2.  Beat the butter and sugar in a large mixing bowl with an electric mixer on medium speed.  Add the egg and vanilla, mixing until combined.

3.  Add the mashed banana and sourdough starter, mixing on low.

4.  In a separate medium mixing bowl mix the flour, salt, baking soda, and baking powder. Add it to the wet ingredients and mix on low until just combined.

5.  Pour into loaf pan, smoothing out the top with a spatula, and bake in preheated oven for 1 hour, or until a toothpick comes out clean.  The top will split. Allow to cool before slicing.  Store at room temperature, tightly wrapped, for up to three days,


To freeze, allow to cool completely and wrap in plastic wrap and then aluminum foil.  Keeps in freezer for 2 months.

Keywords: sourdough banana bread, banana bread using sourdough discard, sweet sourdough recipes