Banana Muffins Ingredients:  1 1/2 cups all-purpose flour  1 teaspoon baking powder  1 teaspoon baking soda  1/2 teaspoon salt  2 large bananas, mashed  3/4 cup white sugar  1 egg  1/3 cup butter, melted Preparation: Preheat oven to 350 degrees F. Coat muffin pans with non-stick spray, or use paper liners. Sift together the flour, baking powder, baking