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.
Preheat the oven to 350 degrees F. and lightly spray a bread pan with cooking spray (I used a 9x5 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.