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Small Batch Sourdough Discard Banana Muffins with Easy Espresso Streusel Recipe

small batch sourdough discard banana muffins - featured image

These small batch banana muffins combine the tangy depth of sourdough discard with the sweetness of ripe bananas and a crunchy espresso streusel topping, perfect for cozy mornings or afternoon snacks.

Ingredients

Scale
  • 1/2 cup sourdough discard (unfed or fed, about 120g)
  • 1 cup ripe bananas, mashed (about 2 medium bananas)
  • 1/3 cup granulated sugar
  • 1 large egg, room temperature
  • 1/4 cup unsalted butter, melted and slightly cooled (about 56g)
  • 1 teaspoon pure vanilla extract
  • 1 cup all-purpose flour (120g)
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • For the Espresso Streusel Topping:
  • 1/4 cup all-purpose flour (30g)
  • 2 tablespoons brown sugar, packed
  • 1 tablespoon unsalted butter, cold and cut into small pieces (14g)
  • 1 teaspoon espresso powder (instant)
  • Pinch of salt

Instructions

  1. Preheat your oven to 350°F (175°C). Lightly grease your 6-cup muffin tin or line with paper liners.
  2. In a medium bowl, combine sourdough discard, mashed bananas, granulated sugar, egg, melted butter, and vanilla extract. Whisk until smooth and well incorporated.
  3. In a separate bowl, sift together the flour, baking soda, and salt.
  4. Add the dry ingredients to the wet mixture and gently fold with a spatula until just combined. Do not overmix.
  5. In a small bowl, stir together the flour, brown sugar, espresso powder, and salt for the streusel. Add cold butter pieces and combine until crumbly with pea-sized bits.
  6. Spoon the batter into the muffin tin, filling each cup about 3/4 full. Sprinkle the espresso streusel evenly over each muffin.
  7. Bake for 20–25 minutes, or until a toothpick inserted in the center comes out clean and the streusel is golden brown.
  8. Let the muffins cool in the tin for 5 minutes before transferring to a cooling rack.

Notes

Use ripe bananas with brown spots for maximum sweetness. Do not overmix the batter to keep muffins tender. Use cold butter for the streusel to achieve a crumbly texture. Rotate the pan halfway through baking if your oven has hot spots. Chill streusel topping before adding if it tends to sink.

Nutrition

Keywords: sourdough discard, banana muffins, espresso streusel, small batch, easy muffins, breakfast, snack, coffee flavor