1 cup whole wheat flour

1/2 cup all-purpose flour

1 teaspoon baking powder

1 teaspoon baking soda

1/8 teaspoon salt

1/4 cup "measures-like-sugar" calorie-free sweetener

2 tablespoons margarine, melted

4 medium-sized very ripe bananas, peeled and mashed

1 large egg, lightly beaten

Cooking spray

Preheat oven to 350°.

Lightly spoon flours into dry measuring cups; level with a knife. Combine flours and next 3 ingredients in a large bowl. Combine sweetener and next 3 ingredients; add to flour mixture, stirring just until moist.

Pour batter into an 8 x 4-inch loaf pan coated with cooking spray. Bake at 350° for 50 to 55 minutes or until a wooden pick inserted in center comes out clean. Cool in pan on a wire rack 10 minutes; remove from pan, and cool completely on wire rack.