Ingredients
2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon ground cinnamon
a dash of nutmeg
1/2 cup unsalted butter, softened to room temperature
1/2 cup brown sugar
1/2 cup white sugar
2 large eggs, at room temperature
4 very ripe bananas, mashed with a fork or potato masher
1/4 cup buttermilk
1 teaspoon vanilla extract
1/2 cup walnuts, toasted and chopped
3 tablespoons flour
1/4 cup brown sugar
1/4 teaspoon cinnamon
2 tablespoon unsalted butter, slightly softened and cut into pieces
1/4 cup chopped walnuts
Preparation
