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Ultimate Sourdough Banana Bread

Fluffy, flavourful, and with just the right amount of nuttiness, this banana bread makes perfect use of your sourdough discard. It has a tender crumb, thanks to the mix of butter and oil, and is packed with the goodness of pecans. Plus, there's a long-fermented version for extra digestibility!
Prep Time 10 minutes
Cook Time 1 hour
Cooling time 1 hour
Total Time 2 hours 10 minutes
Course Breakfast, Dessert, Snack
Cuisine American, Sourdough
Servings 1 loaf

Equipment

  • 1 23x13cm (9x5in) loaf pan (glass or aluminium)

Ingredients
  

Dry Ingredients:

  • 250 g (~2 cups) cake flour
  • ½ teaspoon baking powder
  • ½ teaspoon baking soda
  • ¼ teaspoon salt
  • ½ teaspoon ground cinnamon

Wet Ingredients:

  • ¼ cup (60ml) neutral oil (e.g., sunflower or canola)
  • 60 g (¼ cup) unsalted butter, melted (salted butter also works fine)
  • 150 g (¾ cup) packed light or dark brown sugar
  • 2 large eggs at room temperature
  • 120 g (½ cup) sourdough starter (active or discard - fresher is better)
  • 460 g (2 cups) mashed ripe bananas (about 4 large)
  • 1 teaspoon vanilla essence or extract

Optional Mix-ins:

  • 100 g (¾ cup) chopped pecans

Instructions
 

Long-Fermented Method:

  • Initial Mix: In a large bowl, combine the sourdough discard, mashed bananas and brown sugar. Whisk until well combined. Add in the flour and stir until just combined.
  • Fermentation: Cover the bowl and let it rest at room temperature overnight or for 4–6 hours.
  • Final Mix: After fermentation, add the eggs, melted butter, oil, baking powder, baking soda, salt, and vanilla extract. Mix until just combined. Fold in pecans if using.
  • Bake: Preheat the oven to 170°C (340°F). Pour the batter into a greased loaf pan. Bake for 55–60 minutes, covering with foil at the 30-minute mark if the top browns too quickly. It is done when a toothpick comes out with a few moist crumbs.
  • Cool: Allow the bread to cool in the pan on a wire rack for 1 hour before removing and slicing.

Quick Bake Method:

  • Preheat Oven: Set to 170°C (340°F).
  • Combine Wet Ingredients: In a large bowl, whisk together the melted butter, oil, brown sugar, eggs, sourdough discard, mashed bananas, and vanilla extract until smooth.
  • Add Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon. Add this mixture to the wet ingredients and stir until just combined. Fold in pecans if desired.
  • Bake: Pour the batter into a greased loaf pan. Bake for 55–60 minutes, covering with foil at the 30-minute mark if necessary. It is done when a toothpick comes out with a few moist crumbs.
  • Cool: Let the bread cool in the pan on a wire rack for 1 hour before removing and serving.

Storage

  • Room Temperature: Store in an airtight container for up to 2 days.
  • Refrigerator: Keeps well for up to 1 week.
  • Freezer: Wrap tightly in cling wrap or slice and put into ziplock bags and freeze for up to 3 months. Thaw at room temperature before serving.

Notes

  • For the long-fermented method - the bananas will become brown overnight but do not worry, this is normal and there is nothing wrong. The bananas oxidise but this does not affect the flavour at all.
  • If you have some overripe bananas lying around but you're not ready to make anything just yet, freeze them in a ziploc bag! You can also use up some frozen then thawed mashed bananas ffor this recipe.
Keyword loaf cake, sourdough discard