Ingredients

1/2 cup butter, softened1/2 cup sugar1/2 cup packed brown sugar2 large eggs1-1/2 cups mashed ripe bananas (about 3 large)3 teaspoons vanilla extract2 cups all-purpose flour3 teaspoons baking soda1 cup chopped walnuts1 cup semisweet chocolate chips

Preparation

Preheat oven to 350°. Cream butter and sugars. Beat in eggs, bananas and vanilla. In another bowl, combine flour and baking soda; add to creamed mixture just until combined. Stir in walnuts and chocolate chips. Fill greased or paper-lined muffin cups two-thirds full.

Bake until a toothpick comes out clean, 20-25 minutes. Cool 5 minutes before removing from pans to wire racks.