– 2 cups peeled, mashed, ripe bananas (usually 4 or 5 whole bananas)
– 2 cups all-purpose flour
– 2 teaspoons baking powder
– 1 teaspoon ground cinnamon
– ½ cup (1 stick) butter, softened
– 2/3 cups firmly packed dark brown sugar
– 2 eggs
– 1 teaspoon vanilla extract