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Moist Banana Zucchini Bread Recipe with Crunchy Walnut Streusel

banana zucchini bread - featured image

A moist banana zucchini bread topped with a crunchy walnut streusel, perfect for breakfast, snacks, or brunch. This easy recipe combines natural sweetness and moisture with a delightful nutty topping.

Ingredients

Scale
  • 3 ripe bananas, mashed
  • 1 medium zucchini, grated and lightly squeezed
  • 2 cups (240g) all-purpose flour
  • 1 teaspoon baking soda
  • 1 teaspoon baking powder
  • ½ teaspoon salt
  • 1 teaspoon ground cinnamon (optional)
  • ½ cup (115g) unsalted butter, melted and slightly cooled (or melted coconut oil for dairy-free)
  • ¾ cup (150g) granulated sugar (can swap half for brown sugar)
  • 2 large eggs, room temperature
  • 1 teaspoon vanilla extract
  • ¾ cup (90g) walnuts, chopped (for streusel topping)
  • ¼ cup (50g) brown sugar (for streusel)
  • ½ teaspoon ground cinnamon (for streusel)
  • 2 tablespoons (28g) unsalted butter, cold and cubed (for streusel)

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×5-inch loaf pan or line with parchment paper.
  2. Grate the zucchini finely and squeeze out excess moisture using a clean towel or paper towels.
  3. In a large bowl, whisk together flour, baking soda, baking powder, salt, and ground cinnamon.
  4. In another bowl, mash bananas until mostly smooth. Add melted butter, sugar, eggs, and vanilla extract; whisk until combined.
  5. Pour wet ingredients into dry ingredients and fold gently until just combined.
  6. Fold in grated zucchini evenly.
  7. In a small bowl, combine chopped walnuts, brown sugar, cinnamon, and cold cubed butter. Use a pastry cutter or forks to cut butter into coarse crumbs.
  8. Pour batter into the prepared loaf pan and spread evenly. Sprinkle walnut streusel topping generously over the batter.
  9. Bake for 55-65 minutes, checking doneness with a toothpick inserted in the center; it should come out with a few moist crumbs but no wet batter.
  10. Cool bread in the pan for 15 minutes, then transfer to a wire rack to cool completely.

Notes

Squeeze excess water from zucchini to avoid soggy bread. Use ripe bananas for natural sweetness. Fold batter gently to prevent toughness. Chill butter for streusel to get crunchy topping. Tent with foil if streusel browns too fast. Cool completely before slicing to prevent crumbling.

Nutrition

Keywords: banana bread, zucchini bread, walnut streusel, moist bread, easy banana bread, healthy banana bread, quick bread, snack, breakfast