If you keep a sourdough starter, you likely find yourself with extra discard during regular feedings. One of the best ways to use it is in baked goods like banana bread. This sourdough discard banana bread is moist, tender, and full of rich banana flavor while making good use of leftover starter.

The sourdough discard adds a subtle depth of flavor and helps create a soft texture without making the bread taste sour. It’s a simple recipe that works well for breakfast, snacks, or even dessert.
Sourdough Discard Banana Bread
One of the best ways to use sourdough discard is in baked goods like banana bread. This sourdough discard banana bread is moist, tender, and full of rich banana flavor while making good use of leftover starter.
Ingredients
- 3 bananas, mashed
- ⅓ cup sourdough starter discard (100 g)
- 3 eggs
- ½ cup oil or melted butter (108 g)
- 1 cup sugar (200 g)
- 2 cups flour (245 g)
- ¼ teaspoon salt
- 2 teaspoon baking powder
Instructions
Mash the bananas in a large mixing bowl.
Add all the ingredients except baking powder and baking soda. Stir until everything is incorporated.
Cover and ferment for 6-8 hours or overnight in the cooler months.
When you are ready to bake, preheat the oven to 350 and line a loaf pan with parchment paper. I like to wet the parchment paper to help it fit in the pan better.
Add the baking powder and baking soda and stir until incorporated.
Pour the batter into the prepared loaf pan and spread it evenly.
Bake for about 60 minutes, or until a toothpick inserted into the center comes out clean.
Cool on a wire rack before serving.
Why You’ll Love This Sourdough Discard Banana Bread
This recipe is a great way to reduce food waste while baking something delicious. The sourdough discard blends beautifully with the bananas and creates a slightly richer flavor than traditional banana bread.
It’s also an easy, one-bowl style recipe that doesn’t require any special equipment. If you have overripe bananas and extra sourdough starter, you can quickly turn them into a comforting homemade treat.
Ingredients
- 2 cups flour (245 g)
- ⅓ cup sourdough starter discard (100 g)
- ¼ teaspoon salt
- 3 eggs
- 3 bananas, mashed
- ½ cup oil or melted butter (108 g)
- 1 cup sugar (200 g)
- 1 teaspoon baking powder
- ½ teaspoon baking soda
How to Make Sourdough Discard Banana Bread
Mash the bananas in a large mixing bowl.
Add all the ingredients except baking powder and baking soda and streusel ingredients. Stir until everything is incorporated.
Cover and ferment for 6-8 hours or overnight in the cooler months.
When you are ready to bake, preheat the oven to 350 and line a loaf pan with parchment paper. I like to wet the parchment paper to help it fit in the pan better.
Add the baking powder and baking soda and stir until incorporated.
Pour the batter into the prepared loaf pan and spread it evenly.
Bake for about 60 minutes, or until a toothpick inserted into the center comes out clean.
Cool on a wire rack before serving.
Tips for the Best Banana Bread
Use very ripe bananas for the best flavor and sweetness. The darker the bananas, the better the banana bread will taste.
Do not overmix the batter. Stir just until the ingredients are combined to keep the bread tender.
Add a streusel topping to take it to the next level.
Related Post: Sourdough Discard Banana Bread with Streusel
Optional Add-Ins
You can easily customize this banana bread with a few extra ingredients if desired.
Some popular additions include chopped walnuts, chocolate chips, or a sprinkle of cinnamon. These small additions can add texture and extra flavor to the loaf.
Serving Ideas
Sourdough discard banana bread is delicious served warm with a little butter. It also pairs well with coffee or tea for a simple breakfast or afternoon snack.
Slices can be toasted lightly and spread with butter, honey, or cream cheese for an extra treat.
Final Thoughts
This sourdough discard banana bread is a wonderful way to use leftover starter while baking something comforting and delicious. With simple ingredients and a straightforward method, it’s an easy recipe to add to your regular baking rotation.
If you keep a sourdough starter in your kitchen, this banana bread is a practical and satisfying way to make sure none of that valuable discard goes to waste.
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