Banana Chocolate Chip Muffins

2 extra ripe bananas (about 1 cup)
2 eggs
1 cup packed brown sugar
1/2 cup melted butter
1 tsp. vanilla
2 1/4 cups flour
2 tsp. baking powder
1/2 tsp. cinnamon
1/2 tsp. salt
1 cup mini chocolate chips
1/2 cup chopped walnuts

Mash bananas. Beat together with eggs, sugar, butter and vanilla. Combine flour, baking powder, cinnamon and salt. Stir in chocolate chips and nuts. Add banana mixture to flour mixture. Mix just until well blended. Spoon into well-greased muffin tins. Bake at 350ºF 25-30 minutes.

Makes about 18 muffins.