
A unique Sourdough Banana Bread that combines the richness of classic banana bread with the subtle complexity of sourdough starter. Each slice reveals a perfectly light texture and pure banana flavor, creating a bread that's so delicious it doesn't even need butter.
This recipe was born from my desire to find more uses for sourdough starter beyond basic bread. The first time I added it to banana bread, I discovered it created an incredibly light texture that let the banana flavor truly shine.
Essential Ingredients
- Ripe Bananas: Spotted and sweet
- Sourdough Starter: Active and bubbly
- All-Purpose Flour: Measured correctly
- Unsalted Butter: Room temperature
- Brown Sugar: For moisture
- Granulated Sugar: For sweetness
- Large Eggs: Room temperature
- Pure Vanilla Extract: For depth
- Baking Soda: For proper rise
STEP-BY-STEP PREPARATION
- 1. Initial Setup:
- Preheat oven to 350°F. Grease a 9x5-inch loaf pan with non-stick spray. Have all ingredients at room temperature, especially eggs and butter. Make sure sourdough starter is active.
- 2. Wet Ingredients:
- Cream butter with both sugars until light and fluffy, about 1-2 minutes. Add eggs and vanilla, mixing well. Fold in mashed bananas until just a few lumps remain.
- 3. Dry Ingredients:
- Whisk together flour, baking soda, and salt in a separate bowl. This ensures even distribution of leavening agents and prevents bitter spots.
- 4. Combining Components:
- Gently fold dry ingredients and sourdough starter into wet mixture by hand. Don't overmix - this keeps bread tender. Pour into prepared pan.
- 5. Baking Process:
- Bake for 55-65 minutes until a toothpick comes out with a few crumbs but no wet batter. Let cool in pan for 10 minutes before removing.

The magic of this bread lies in its simplicity. As my grandmother would say, "Let the bananas and starter do the talking."
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Storage and Make-Ahead Success
Store bread at room temperature, covered with a towel or in a sealed bag, for 4-5 days. Don't refrigerate as this can dry it out. For longer storage, freeze whole loaf or individual slices for up to 6 months - wrap well in plastic wrap then foil, removing all air. Label with date and use within 3 months for best flavor.
Temperature and Serving Variations
While delicious plain, try toasting slices lightly for breakfast. Serve at room temperature for pure banana flavor, or warm slightly for a cozy treat. Create a special brunch presentation by serving with honey butter or cream cheese. During fall months, add a sprinkle of cinnamon sugar before toasting.

Creative Adaptations
Transform this basic recipe by adding nuts, chocolate chips, or dried fruit. Create a cinnamon swirl version by layering cinnamon sugar between portions of batter. For special occasions, top with cream cheese frosting or drizzle with honey. The sourdough base welcomes creativity while maintaining its light, tender texture and pure banana flavor. Remember, the starter acts as a leavening agent rather than a flavoring, so feel free to experiment with additional mix-ins.
Frequently Asked Questions
- → What type of sourdough starter should I use?
- Use active, room temperature sourdough starter at its peak.
- → Can I use frozen bananas?
- Yes, thaw completely and drain excess liquid before using.
- → How should I store this bread?
- Store in an airtight container at room temperature for up to 4 days.
- → Can I freeze this bread?
- Yes, wrap well and freeze for up to 3 months.
- → Do I need to feed my starter before using?
- Yes, use starter that's been fed and is active for best results.