Ingredients
Method
- Preheat the oven to 325°F. Grease and flour a 9x5-inch loaf pan and set it aside.
- Prepare the streusel topping by mixing the flour, brown sugar, and cinnamon in a medium bowl until combined. Cut in the butter using your fingers or a pastry blender until the mixture resembles coarse crumbs. Stir in the chopped walnuts and set aside.
- Whisk together the flour, baking powder, baking soda, salt, cinnamon, and nutmeg in a medium bowl, then set aside.
- Cream the butter and sugars in a large mixing bowl until light and fluffy. Add the eggs one at a time, beating well after each addition. Use a wooden spoon to stir in the mashed bananas, buttermilk, and vanilla. Gradually stir in the dry ingredients until just incorporated, being careful not to overmix. Gently fold in the walnuts.
- Pour the batter into the prepared loaf pan and sprinkle the streusel topping evenly over the surface. Bake for 1 hour to 1 hour and 10 minutes, or until a toothpick inserted into the center comes out clean.
- Remove the pan from the oven and let it cool on a wire rack for 10 to 15 minutes. Turn the bread out of the pan and finish cooling on the wire rack. Serve warm or at room temperature.
Notes
Cover the bread with plastic wrap and store at room temperature for up to 3 days.
