
1½ cups all-purpose flour
2 tablespoons granulated sugar
1 teaspoon baking powder
½ teaspoon baking soda
½ teaspoon salt
2 bananas, mashed
1 beaten egg
1⅓ cups buttermilk
2 tablespoons vegetable oil
2 bananas, sliced
½ cup halved or chopped walnuts
¼ cup (½ stick) butter
1 cup packed brown sugar
2⁄3 cup water
½ teaspoon vanilla