Chocolate Banana Muffins |

Ingredients

• 1/2 cup butter, softened
• 1/2 cup sugar
• 1/2 cup packed brown sugar
• 2 large eggs
• 1-1/2 cups mashed ripe bananas (about 3 large)
• 3 teaspoons vanilla extract
• 2 cups all-purpose flour
• 3 teaspoons baking soda
• 1 cup chopped walnuts
• 1 cup (6 ounces) semisweet chocolate chips