Sourdough Banana Bread

Sourdough Banana Bread

Although it might sound fancier or more complicated than a traditional banana bread, this sourdough banana bread recipe is even easier to put together than regular banana bread. And it’s so delicious your friends and neighbors will be begging to know your secret ingredient.

The reason this sourdough banana bread is so easy to make is that I use my food processor to combine all the ingredients. You can make this with a mixer if you don’t have a food processor, but my Cuisinart whips it up in no time!

Because it’s blended together in the food processor, you don’t even have to mash the bananas first! In fact, I even let the Cuisinart chop the walnuts for me as it’s mixing. Easy peasy.

Like the sourdough biscuit and pancake recipes I have posted recently, this banana bread recipe uses a cup of sourdough starter straight from the refrigerator so it’s a perfect way to use up the sourdough discard when feeding your starter.

Sourdough banana bread is put together like a regular quick bread but it uses a cup of sourdough starter to replace part of the flour and liquid from a traditional banana bread recipe. The sourdough starter adds extra flavor, but doesn’t actually make the banana bread taste like sourdough bread.

Your sourdough banana bread will just have that little something special that will make people wonder what your secret is.

If you’d like to keep your own sourdough starter so you can make sourdough bread, biscuits, pancakes, chocolate cake, pumpkin cake, banana bread, and more, you should make your own.

I’ve recently updated my sourdough starter post to include printable instructions. And I have shared step-by-step, day-by-day photos of the entire process in case you want to check back in to compare your results with mine along the way. It takes about a week to create a sourdough starter from scratch, but it’s easy to do and only takes a couple minutes of work each day.

If you’d prefer to purchase a sourdough starter instead, King Arthur Flour sells one and it works great. In fact, my very first sourdough starter was one I purchased from them over ten years ago!

If you already have a sourdough starter ready to go, lucky you! Let’s make some banana bread! Make sure to check out the links below the printable recipe because I’m sharing some great sourdough ideas this week.

Sourdough Banana Bread

Save Recipe

Print Recipe

My Recipes

My Lists


  • 1 1/2 cups all purpose flour
  • 1 cup sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup sourdough starter (cold is fine)
  • 1/2 cup softened butter
  • 1 cup mashed ripe banana (about 2 1/2 medium bananas)
  • 1 egg
  • 1 teaspoon vanilla
  • 1 cup walnut halves (or 3/4 cup chopped walnuts)
Read the whole recipe on Pinch My Salt