1. Preheat oven to 180ºC . Spray a 13 x 23 cm baking pan with nonstick cooking spray.
2. In a medium bowl, combine the flours, sugar, cinnamon, baking powder, baking soda, nutmeg, cloves and salt. In a large bowl, beat the bananas, buttermilk, Butter Buds and egg substitute with an electric beater or a wire whisk. Add the dry ingredients until well blended. Add the walnuts, if desired. Pour into the prepared pan. Bake 25 to 30 minutes or until toothpick inserted in the center comes out clean. Cool on wire rack. Cut into squares.
Makes 24 squares.
Per Serving (1 square): 90 calories, 2 g protein, 20 g carbohydrate, 1 g fat, 1 g saturated fat, 1 mg cholesterol, 85 mg sodium Diabetic Exchanges: 1 starch/bread exchange