Mom’s Banana Bread

INGREDIENTS:

1 cup sugar
1/4 cup light butter, softened
1-2/3 cups mashed ripe banana (about 3 bananas)
1/4 cup skim milk
1/4 cup low-fat sour cream
2 large egg whites
2 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon salt
Cooking spray

PROCEDURE:

Preheat oven to 350 degrees.
Combine sugar and butter in a bowl; beat at medium speed of a mixer until well-blended. [...]