Ingredients
1 egg
1 cup sugar
1 stick unsalted butter, at room temperature
1 teaspoon vanilla
1/2 cup buttermilk
2 overripe bananas, mashed
2 cups all purpose flour
1/2 teaspoon salt
1/2 teaspoon baking soda
1 teaspoon baking powder
1 teaspoon cinnamon
Crumb Topping:
1/2 cup powdered sugar
1/2 cup all purpose flour
4 tablespoons unsalted butter, melted
1/2 teaspoon cinnamon
pinch of salt
Preparation
