Walnut Banana Cupcakes Recipe - Food.com

Ingredients

• 1/4 cup butter, softened
• 3/4 cup sugar
• 2 eggs
• 1/2 cup mashed ripe banana
• 1 teaspoon vanilla extract
• 1 cup flour
• 1/2 teaspoon baking soda
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon salt
• 1/4 cup sour cream
• 4 ounces cream cheese, softened
• 1/2 teaspoon vanilla extract
• 1 3/4 cups confectioners' sugar
• 3 tablespoons chopped walnuts