Sourdough Banana Bread

5 from 6 votes

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Homemade Sourdough Banana Bread is a simple banana bread recipe with a twist. It uses sourdough starter or sourdough discard in addition to classic banana bread ingredients.

A whole baked banana bread sitting on cooling rack.

Sourdough banana bread has all the sweet banana goodness of classic banana bread with just a twist of sour flavor. And you can use up some sourdough starter or discard so it’s a win-win sourdough treat!

If you’re looking for more recipes that call for either sourdough starter or discard, check out Sourdough Chocolate Chip Cookies, Sourdough Chocolate Muffins, or Quick Sourdough Biscuits.

🍞 18 Easy Sourdough Recipes!

A whole baked sourdough banana bread  in a speckled white and blue bread pan.

Why You’ll Love This Recipe

  • Easy. Banana bread is an easy recipe to make. It calls for one bowl, a bunch of pantry staples, and a few simple steps.
  • Flexible. You can use active sourdough starter or sourdough discard
  • Fast. This sourdough recipe comes together quickly because it doesn’t require any resting or rising time. 
  • Fun. Sourdough banana bread is a great recipe to make with kids. They enjoy mashing the bananas with a pastry blender and measuring and dumping the ingredients.

Recipe Ingredients

  • Bananas: Make sure they are very ripe but not rotting. They should have lots of brown spots or mostly brown. If they are all black and leaking liquid, they are past overripe and are starting to rot. 
  • Granulated sugar
  • Sourdough starter, discard or fed starter: Use sourdough starter or fed starter if you want less tang from the sourdough. 
  • Egg
  • Light oil
  • Vanilla extract
  • Flour: Both all-purpose flour and whole wheat pastry flour work in this recipe. 
  • Baking powder
  • Salt

See the recipe card below for full information on ingredients and quantities.

Sliced sourdough banana bread on blue towel.

How to Make Sourdough Banana Bread

Three bananas in a white bowl with a green rim and a pastry blender with a red handle on a white counter.

Step #1. Mash the bananas in a medium mixing bowl and add the sugar. Stir to combine. 

Some of the ingredients before they are stirred in a white bowl with a green rim on a white counter.

Step #2. Add the sourdough starter or discard, egg, oil, and vanilla. Stir to combine. 

Sourdough banana bread batter with a yellow spatula used to stir in the dry ingredients in a white bowl with a green rim on a white counter.

Step #3. Gently mix in the dry ingredients. Don’t overwork the dough at this step so that your bread stays tender.

Sourdough banana bread batter in a blue and white speckled enamelware pan on a white counter.

Step #4. Pour the batter into a greased pan and bake at 350 degrees F for 50 to 60 minutes or until a toothpick inserted in the middle comes out clean. 

Recipe FAQs

How do I know if my bananas are very ripe? 

Very ripe bananas (also called overripe bananas) have skin that has turned soft and have lots of brown spots or are mostly brown. They are perfect for baking because they are extra sweet and flavorful.

Should I use sourdough starter or sourdough discard for banana bread?

If you use sourdough discard, the bread will have more of the tang of sourdough than if you use active bubbly starter. Usually people think I put lemon in the bread if they aren’t familiar with sourdough.

Can I freeze sourdough banana bread?

Yes! This recipe freezes great. To freeze this banana bread let it cool completely and then store in an air-tight container in the freezer for up to 3 months. You can also slice the bread and freeze the slices individually. 

A whole baked banana bread sitting on a cooling rack with a knife and some butter next to it.

Expert Tips

  • Use a pastry blender to mash the bananas. This is a great tool to let kids help mash them, too. It’s easier to use than a fork and gets the job done faster.
  • Slice the bread and freeze the slices individually so it’s ready to throw in a lunchbox (it will be thawed by the time lunch comes around). 
  • Check your sourdough banana bread for its level of doneness after 50 minutes of baking because different ovens and elevations can change the baking time a bit. 
  • Experiment by adding your favorite mix-ins to this recipe, such as ¾ cup mini chocolate chips or chopped walnuts.
A slice of banana bread with lots of yellow butter on top.

How to Store Sourdough Banana Bread

Store leftovers covered at room temperature for 2-3 days or in an air-tight container in the fridge for up to a week. You can also store a loaf of this bread in the freezer for up to three months.

More Sourdough Recipes to Consider

sourdough banana bread in speckled white and blue bread pan
5 from 6 votes

Sourdough Banana Bread

Homemade sourdough banana bread is a classic banana bread recipe with a twist. It uses a sourdough starter or sourdough discard in addition to classic banana bread ingredients.
Prep: 15 minutes
Cook: 1 hour
Total: 1 hour 15 minutes
Servings: 1 loaf

Ingredients 

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Instructions 

  • Preheat the oven to 350 degrees F. and lightly spray a bread pan with cooking spray (I used a 9×5 inch bread pan). 
  • In a medium mixing bowl add the mashed banana (or add the bananas to the bowl and use a fork or a pastry cutter to smash them right in the bottom of the bowl).
  • Add the sugar and stir well to combine.  
  • Add the sourdough starter, egg, oil, and vanilla. Stir to combine. 
  • Add the flour to the bowl and then sprinkle the baking powder and salt on top of the flour. Fold in the flour until just combined and no dry spots remain. 
  • Add the batter to the prepared pan. 
  • Bake until the center of the dough is no longer wet and a toothpick inserted in the middle comes out clean, about 1 hour. 
  • Let the bread cool in the pan for 10 minutes before removing it from the pan to finish cooling on a wire rack. 
  • Store leftovers covered at room temperature for 2-3 days or in an air-tight container in the fridge for up to a week.

Notes

  • You can reduce the sugar in this recipe to ¾ of a cup if you would like a less sweet banana bread.
  • Both all-purpose flour and whole wheal pastry flour work well in this recipe. Whole wheat pastry flour is a sifted whole wheat flour with a fine texture.
  • Feel free to change up this recipe with your favorite mix-ins. Add 3/4 mini chocolate chips or chopped nuts to customize your sourdough banana bread. 
  • Get your kids involved with mashing the bananas using the pastry blender. It’s easy for them to hold and great at mashing!
  • Store in an airtight container on the counter for up to three days or in the fridge for up to a week. 

Nutrition

Serving: 1 of 12 slices, Calories: 237kcal, Carbohydrates: 35g, Protein: 3g, Fat: 10g, Saturated Fat: 1g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 7g, Trans Fat: 0.002g, Cholesterol: 16mg, Sodium: 139mg, Potassium: 80mg, Fiber: 1g, Sugar: 19g, Vitamin A: 33IU, Vitamin C: 1mg, Calcium: 25mg, Iron: 1mg
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5 from 6 votes (1 rating without comment)

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12 Comments

  1. Ashley says:

    This recipe looks fantastic. Could this be made into muffins instead? If so, how long would you bake them?

    1. Melissa says:

      Yep, it’ll work great. They’ll need to cook for about 20 minutes but just press them slightly and if they spring back they are done, you can also use a toothpick to test!

  2. L says:

    Will it change the recipie if I add walnuts?

    1. Melissa says:

      Nope, they’ll be delicious!

  3. Judy says:

    5 stars
    I made the sourdough banana bread this morning and It has the most wonderful flavour! This is a recipe Iโ€™ll be using again and again. It sure beats regular banana bread! Thank you Melissa!

  4. Lee says:

    I usually weigh my ingredients. What is the weight of the starter/discard?

  5. Annalicia Niemela says:

    5 stars
    This banana bread recipe is delicious!

  6. Kaysha says:

    5 stars
    I’ve made this recipe a couple times, and I love it! I typically don’t go crazy for banana bread, but the small amount of banana flavor, sour flavor from the discard, and the vanilla combine so well with the sweetness from the sugar. Thank you for sharing a banana bread recipe I actually enjoy!!

    1. Melissa says:

      I completely agree with you, it’s really balanced this way! Thank you for leaving a review and a star rating!

  7. deb c says:

    5 stars
    I made two loaves last night and put them in the freezer. When family comes next week, I’m ready for snacking. My newest thought…..I bet this stuff would be amazing as French toast, served with slice bananas and your buttermilk or caramel syrup maybe…hmmmmm

    1. Melissa says:

      Yesss their was a cafeteria my freshman year on campus at Ball State that made a banana bread french toast and it was amazing!

  8. deb c says:

    5 stars
    Oh, oh, oh…this is soooooo good. I love how the sourdough balances the banana! No one flavor overpowers the other either…its the perfect blend!!!! And so so moist! I’ll be honest…..I could easily eat a whole loaf myself in one sitting! I love banana bread and this is now my favorite recipe!!!! Had to use AP flour this time. I stored it in the fridge…..at the 5 day mark it still is moist and yummy! It traveled well on the 4wheeler for lunch snacks too ๐Ÿ™‚ Thanks a million!