Chocolate Chip Muffins
["1 3/4 c. flour", "1/2 c. whole wheat flour", "2 1/2 tsp. baking powder", "1 ripe banana", "1/2 c. brown sugar", "2 eggs", "1 c. milk", "1/3 c. butter, melted", "1 c. chocolate chips"]
["Preheat oven to 400\u00b0.", "Butter cupcake pan.", "Sift together flours and baking powder; reserve.", "Combine banana with brown sugar until smooth.", "Beat in eggs, milk and melted butter.", "Stir in dry ingredients only until blended.", "Quickly stir in chocolate chips.", "Do not overbeat.", "Spoon batter into cups.", "Bake 25 minutes or until browned slightly.", "Cool on rack."]
["flour", "whole wheat flour", "baking powder", "banana", "brown sugar", "eggs", "milk", "butter", "chocolate chips"]