Sourdough banana bread is a classic favorite that brings together the tangy flavor of sourdough with the natural sweetness of ripe bananas. Its golden-brown crust and soft, moist interior make it perfect for breakfast, brunch, or a simple afternoon snack. When you slice into this bread, you will notice the delicate crumb and subtle texture created by the combination of sourdough starter and well-ripened bananas. Its inviting aroma fills your kitchen with warmth, hinting at the rich flavors waiting inside.
Why We Love This Sourdough Banana Bread
You will fall in love with this sourdough banana bread because it combines the best of both worlds: the tanginess of sourdough and the natural sweetness of bananas. The bread is moist without being heavy, which means you can enjoy multiple slices without feeling weighed down. It’s versatile, too—you can add nuts, chocolate chunks, or dried fruit for extra flavor and texture. Unlike traditional banana bread, the sourdough starter adds depth, giving a slight complexity to every bite that makes this bread truly unforgettable.
This recipe is simple enough to make on a weekday morning yet impressive enough to serve at a brunch or family gathering. Using overripe bananas ensures maximum sweetness and moisture, while the light, fluffy texture is maintained by careful folding of the dry ingredients. The result is a bread that tastes indulgent but remains easy to prepare, making it a must-have in your baking rotation.
Ingredients for Sourdough Banana Bread
To make this bread, you will need a combination of wet and dry ingredients. Using precise measurements ensures the right texture and flavor.
Wet Ingredients:
- 1/2 cup melted butter
- 1 cup dark brown sugar
- 3 ripe bananas, mashed (350g)
- 2 large eggs
- 1/2 cup sourdough starter discard
- 1 teaspoon vanilla extract
Dry Ingredients:
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 2 teaspoons baking powder
- 1 teaspoon salt
How to Make Sourdough Banana Bread
Start by preheating your oven to 350 degrees Fahrenheit. Grease a 9×5-inch loaf pan lightly with butter or line it with parchment paper for easy removal later.
In a medium bowl, combine all dry ingredients: flour, baking soda, baking powder, and salt. Mix well so that the leavening agents are evenly distributed. In another bowl or stand mixer, beat the melted butter and dark brown sugar together for five minutes until light and fluffy. This step is crucial because it creates air pockets that help the bread rise.
Add the eggs one at a time, followed by vanilla, mashed bananas, and the sourdough starter. Mix on low speed until just combined. You want to avoid over-mixing at this stage because it can develop gluten, which makes the bread dense and tough. Gently fold in the dry ingredients in small portions until fully incorporated. If you want, add optional ingredients like walnuts, pecans, or chocolate chips. Fold them in carefully to keep the batter airy.
Pour the batter into your prepared loaf pan and spread it evenly. Bake in the preheated oven for 50 to 60 minutes. Start checking at 50 minutes by inserting a toothpick into the center of the loaf. If it comes out clean, your bread is ready. Allow the bread to cool in the pan for at least one hour before slicing.
For a deeper flavor, you can try the long-fermentation method. Mix sourdough starter, melted butter, eggs, and flour 12 to 24 hours in advance. Let it ferment at room temperature for six hours, then refrigerate for 6 to 18 hours. This method intensifies the sourdough taste and creates a more complex crumb. When ready, combine with the remaining ingredients and bake as directed.
How to Serve Sourdough Banana Bread
Serving sourdough banana bread is easy and versatile. You can enjoy it fresh out of the oven or cooled to room temperature. Slice it thick for a hearty breakfast or thin for a light snack. A pat of butter or a drizzle of honey enhances the natural sweetness without overpowering the subtle tang of sourdough.
For a special treat, try toasting slices lightly and topping them with nut butter or cream cheese. The heat brings out the banana aroma and makes the bread slightly crisp on the edges while keeping the center soft and tender. You can also pair a slice with a hot cup of coffee or tea, creating a perfect morning or afternoon pairing. For a more indulgent dessert option, serve slices with vanilla ice cream or a dollop of whipped cream. The combination of warm bread and creamy toppings is irresistible.
Expert Tips for Sourdough Banana Bread
- Banana Selection: Always use very ripe bananas. They are sweeter, softer, and mash easily, which ensures a moist and flavorful bread. Leaving a few chunks of banana in the batter creates an interesting texture.
- Mixing Technique: Avoid over-mixing once the dry ingredients are added. Over-mixing can make your bread dense and chewy instead of light and fluffy.
- Pan Preparation: Greasing the pan is essential, but lining it with parchment paper makes removal cleaner and easier.
- Optional Add-ins: Nuts, chocolate chunks, or dried fruits can be folded in gently for added flavor and texture. Do not overdo it—too many add-ins can weigh down the batter.
- Temperature Control: Make sure your butter is melted but not hot, and your eggs are at room temperature. This helps the ingredients combine smoothly without curdling.
- Check for Doneness: Start checking the bread with a toothpick at 50 minutes. Oven temperatures vary, and overbaking dries out the bread.
How to Store Sourdough Banana Bread
Sourdough banana bread stays fresh for several days when stored properly. Keep it at room temperature in an airtight container or wrap it tightly in plastic wrap. It will remain soft and moist for up to three days.
For longer storage, you can refrigerate the bread for up to a week. Slice before refrigerating for easier serving. Alternatively, freeze slices in a sealed freezer bag for up to three months. Thaw at room temperature or toast slices directly from the freezer. Proper storage ensures your bread maintains its flavor, texture, and freshness for multiple servings.
Variations of Sourdough Banana Bread
You can experiment with this recipe to create exciting variations. Add 1/2 cup of chopped walnuts or pecans for a nutty crunch. Chocolate lovers can fold in 1/2 cup of chocolate chips or chunks for sweet pockets of melted chocolate in every bite.
For a fruity twist, try adding 1/2 cup of dried cranberries, raisins, or blueberries. Mixing in a teaspoon of cinnamon or nutmeg enhances the warmth of the flavors. If you prefer a lighter texture, use half all-purpose flour and half whole wheat flour for a healthier option.
Another variation is to make muffins instead of a loaf. Divide the batter into muffin tins and bake for 20-25 minutes. This creates perfectly portioned treats for on-the-go breakfasts or snacks. By experimenting with add-ins and baking styles, you can make this sourdough banana bread your own signature recipe.
Frequently Asked Questions about Sourdough Banana Bread
Can I use active sourdough starter instead of discard?
Yes, active starter works perfectly. It will add a slightly stronger sour flavor but will not affect the texture.
Do I have to use brown sugar?
Brown sugar adds moisture and a rich flavor. You can substitute with white sugar, but the bread may be slightly less moist and less flavorful.
Can I make this bread gluten-free?
You can try using a gluten-free all-purpose flour blend, but the texture may be different. Make sure the blend contains xanthan gum or another binder to help with structure.
How can I make the bread extra moist?
Use very ripe bananas and do not over-mix the batter. You can also add a tablespoon of yogurt or sour cream for extra moisture.
Can I add nuts or chocolate chips?
Absolutely! Fold in your preferred add-ins gently to keep the batter airy. Walnuts, pecans, chocolate chunks, or dried fruit all work well.
How long will it keep?
At room temperature in an airtight container, the bread stays fresh for up to three days. Refrigerated, it lasts up to a week, and frozen slices can be kept for three months.
Is it okay to make muffins instead of a loaf?
Yes, the same batter works for muffins. Bake for 20-25 minutes until a toothpick comes out clean, and you have perfectly portioned treats.

Sourdough Banana Bread
Equipment
- Mixing Bowls:
- Loaf Pan
- Measuring Spoons
Ingredients
- 1/2 cup melted butter
- 1 cup dark brown sugar
- 3 ripe bananas mashed (350g)
- 2 large eggs
- 1/2 cup sourdough starter discard
- 1 tsp vanilla extract
- 2 cups all-purpose flour
- 1 tsp baking soda
- 2 tsp baking powder
- 1 tsp salt
Instructions
- Preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan or line it with parchment paper.
- In a medium bowl, mix the dry ingredients: flour, baking soda, baking powder, and salt.
- In another bowl, beat the melted butter and dark brown sugar together until light and fluffy.
- Add the eggs one at a time, followed by the vanilla, mashed bananas, and sourdough starter. Mix until just combined.
- Gently fold in the dry ingredients until fully incorporated.
- Pour the batter into the prepared loaf pan and spread it evenly.
- Bake for 50 to 60 minutes, checking for doneness with a toothpick at 50 minutes.
- Let the bread cool in the pan for at least one hour before slicing.
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