Instructions

  1. Combine flour, baking powder, baking soda and salt in a large bowl; make a well in center of ingredients.
  2. Combine yogurt, banana, sugar, margarine, egg whites, egg and vanilla; add to dry ingredients, stirring just until dry ingredients are moistened.
  3. Coat a 9 inch loaf pan with cooking spray, sprinkle with 2 teaspoons flour.
  4. Spoon batter into prepared pan.
  5. Bake at 350 degrees for 1 hour or until a toothpick inserted in center comes out clean.
  6. Let cool in pan for 10 minutes, remove and finish cooling on wire rack.