Banana Muffins with Sour Cream | Classic | United States | Recipes - Kraft Heinz

Ingredients

• 2-1/4 cups flour
• 1-1/2 tsp baking powder
• 1/2 tsp baking soda
• 1/2 tsp salt
• 1/4 cup butter, softened
• 1 cup sugar
• 1 cup mashed fully ripe bananas (about 3)
• 1 cup sour cream
• 2 eggs
• 1 cup chopped walnuts