1•Blend together flour, baking powder, baking soda, cinnamon, and salt in a medium mixing bowl.
•Blend together beaten egg whites, banana, sugar, and oil in a large mixing bowl.
•Stir in flour mixture into the banana mixture, blending only until flour mixture is moistened.
•Spray an 8x4x2-inch loaf pan with nonstick cooking spray. Spread batter in prepared pan.
•Bake in a 350 degree F oven for 45 to 50 minutes or until a toothpick inserted near the center comes out clean.
•Cool bread in the pan for approximately 10 minutes, then remove bread from pan and cool it thoroughly on a wire rack.