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Buttermilk Banana Bread

Moist buttermilk banana bread slice with creamy crumb and walnuts, close up food photo.

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This recipe transforms overripe bananas into an exceptionally moist and tender loaf. The secret is buttermilk, which reacts with baking soda for a perfect rise and a light, non-gummy crumb. It’s a simple, make-ahead classic that stays delicious for days.

Ingredients

Scale
  • 3 very ripe medium bananas (about 1 1/4 cups mashed)
  • 1/2 cup (115g) unsalted butter, melted and slightly cooled
  • 3/4 cup (150g) packed light brown sugar
  • 1/4 cup (50g) granulated sugar
  • 2 large eggs, at room temperature
  • 1 teaspoon pure vanilla extract
  • 1/2 cup (120ml) full-fat buttermilk, at room temperature
  • 2 cups (250g) all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon fine sea salt

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line with parchment paper, leaving an overhang on the long sides.
  2. In a large bowl, mash the bananas with a fork until mostly smooth with a few small lumps.
  3. To the bananas, add the melted butter, brown sugar, granulated sugar, eggs, vanilla, and buttermilk. Whisk vigorously until completely smooth and emulsified.
  4. In a separate bowl, whisk together the flour, baking soda, baking powder, cinnamon, and salt.
  5. Add the dry ingredients to the wet mixture. Using a rubber spatula, fold gently until just combined. Do not overmix.
  6. Pour the batter into the prepared pan and smooth the top.
  7. Bake for 55 to 65 minutes, until a toothpick inserted into the center comes out with a few moist crumbs attached and the top is deep golden brown.
  8. Let the bread cool in the pan on a wire rack for 20 minutes. Then, use the parchment paper to lift it out and let it cool completely on the rack before slicing.

Notes

For best results, use very ripe, spotty bananas. Ensure buttermilk and eggs are at room temperature to prevent the melted butter from solidifying. Do not slice the loaf while warm, as it will be gummy. Store cooled bread wrapped at room temperature for up to 3 days.

Nutrition