If you have extra sourdough discard and ripe bananas sitting on your counter, this sourdough banana bread recipe is the perfect way to use both. It combines the sweet flavor of overripe bananas with the subtle tang of sourdough discard to create a loaf that’s incredibly moist, tender, and packed with homemade goodness.

Whether you’re looking for a delicious breakfast, afternoon snack, or simple dessert, this easy sourdough banana bread is a foolproof recipe you’ll want to make again and again.
Why You’ll Love This Recipe
- It makes two loaves – one to eat and one to share! (Or you can freeze one for later.)
- Moist, soft texture that stays fresh for days
- The sourdough discard gives it a subtle tang that is so yummy.
- It’s quick to whip up and uses simple ingredients.
- You can serve it for breakfast, brunch, or a snack any time of day.
What Is Sourdough Banana Bread?
Sourdough banana bread is a classic quick bread made even better by adding sourdough discard or active sourdough starter. The starter adds moisture, depth of flavor, and a subtle tang that balances the sweetness of ripe bananas.
Unlike traditional sourdough bread, this quick bread recipe doesn’t require kneading or long fermentation, making it perfect for beginner bakers.
How to Make Sourdough Discard Banana Bread
- PREP – Spray two 8×5″ loaf pans with nonstick cooking spray. (I like to line the bottom with parchment.) Preheat your oven to 350°F (175°C).
- WET INGREDIENTS – Beat the butter and sugar in a mixing bowl for 2-3 minutes. Add the discard, mashed bananas, vanilla, and eggs; beat until well combined.

- DRY INGREDIENTS – Whisk the flour, salt, baking soda, baking powder, and salt in a small bowl.
- COMBINE – Add the flour mixture to the wet ingredients with any desired mix-ins. Stir gently just until barely combined.

- BAKE – Divide the batter between the two pans. Bake for 40-45 minutes, or until a toothpick comes out with no wet batter.

- COOL – Let the bread sit in the pan for about 10 minutes, then carefully dump out onto a cooling rack.

- SERVE – We like our bread served warm, even if it’s a bit messy. For easier slicing, let it cool completely before slicing.

Tips for the Best Sourdough Banana Bread
- For the sweetest banana flavor, use bananas covered with brown spots.
- Thoroughly cream the butter and sugar as directed. This not only adds air, it softens the sugar crystals, making for a softer crumb and fluffier texture.
- After adding the dry ingredients, don’t overmix the batter or your bread will be tough and dense.
- For moist banana bread, don’t overbake it. As soon as a toothpick comes out without batter, the bread is done.
Recipe Variations
- Banana Nut Bread – Stir in a cup of chopped toasted pecans or walnuts.
- Cinnamon Swirl – Layer half the batter, sprinkle with cinnamon sugar, add remaining batter, top with more cinnamon sugar, and swirl with a knife.
- Berry Banana Bread – Add 1 cup blueberries, chopped strawberries, or raspberries.
- Tropical Banana Bread – Add 1/2 cup of toasted coconut and 1/2 cup very well-drained pineapple.
- Peanut Butter – Stir in 2/3 cup of peanut butter chips and layer the batter with swirls of peanut butter.
- Chocolate Chip Sourdough Banana Bread – Add 1 cup of chocolate chips.

Frequently Asked Questions
Can I use sourdough discard straight from the refrigerator?
Yes. Cold sourdough discard works perfectly in this recipe.
Can I use active sourdough starter?
Absolutely. Both active starter and discard produce excellent results.
Why is my banana bread dense?
Overmixing the batter or adding too much flour can create a dense loaf. Mix gently and don’t pack your flour into the measuring cup. If you have a kitchen scale, use it to measure your flour.
Can I make muffins instead?
Yes. Divide the batter among lined muffin cups and bake at 350°F for 18-20 minutes. You should get about 18 muffins.
Serving Suggestions:
- Fresh from the oven with a slather of butter
- Toasted with peanut butter or Nutella
- Drizzled with honey or spread with honey butter
- Spread with cream cheese (We love strawberry cream cheese!)
- Served alongside hot chocolate, coffee, or tea.
- To make a light dessert, spread the cooled loaf with cream cheese frosting.

More sourdough discard recipes:
- Overnight Sourdough Waffles
- Crispy Sourdough Crackers
- Cinnamon Sourdough Coffee Cake
- Chocolate Chip Sourdough Cookies
- Easy Sourdough Biscuits
- Sourdough Discard Chocolate Chip Muffins

Sourdough Banana Bread Recipe
Equipment
Ingredients
- ½ cup salted butter, softened to room temperature
- 1 cup white sugar
- ½ cup sourdough starter discard
- 1 ½ cups mashed overripe bananas (3 large or 4 small bananas)
- 1 tsp vanilla extract
- 2 large eggs
- 2 cups all purpose flour (10 ounces)
- ½ tsp salt
- 1 tsp baking soda
- ½ tsp baking powder
Instructions
- Spray two 8.5 x 4.5 inch loaf pans with cooking spray and line the bottom with parchment paper. Mash the bananas with a fork. Preheat your oven to 350°.
- In a large mixing bowl, beat the butter and sugar with an electric hand mixer for 2-3 minutes, occasionally scraping the sides of the bowl with a rubber spatula. The mixture should be creamy and pale.
- Add the discard, mashed banana, vanilla, and eggs; beat until smooth.
- In a separate bowl, whisk together the flour, salt, baking soda, baking powder, and salt. Add to the banana mixture with any mix-ins. Stir gently just until there are no streaks of flour.
- Divide the batter evenly between the prepared loaf pans. Bake in a preheated oven at 350° for about 40-45 minutes, or until a toothpick inserted in the center comes out with just a few moist crumbs, no wet batter.
- Let the bread cool in the pan for about 10 minutes, then carefully remove the loaves and place them on a wire rack.
- You can serve the bread warm, but for the cleanest slices, let it cool completely.
Notes
- Mix-ins make this flavorful banana bread even more delicious! I like to make one loaf with 1/3 cup of pecans, and one loaf with 1/3 cup of chocolate chips. Just keep in mind that adding additional ingredients will increase the baking time by a few minutes.
- Bread can be wrapped in plastic wrap or stored in an airtight container for 3-4 days. For longer storage, wrap it, then place it in a freezer bag. It will last for 4-5 months.
- You can make this bread in one 9×5″ loaf pan, but you will need to increase the baking time to 55-65 minutes. Don’t add any mix-ins, or it can overflow.
- For muffins, fill 18-20 greased muffin cups; bake for about 20 minutes. Mini muffins only take 14 minutes.
Nutrition
This sourdough banana bread recipe is one of the easiest and tastiest ways to use leftover sourdough discard. The bananas keep every slice moist and flavorful, while the sourdough adds a slight tang that makes this loaf stand out from regular banana bread.





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