1. Beat butter till soft. 2. Mix egg, milk and bananas and whisk briskly.3. Mix cake flour and bitter sweet chocolate chips in cream butter and add egg mixture. Stir to combine , Do not over mix the batter.4. Spoon into a paper cup 3/4 full . Sprinkle top with white chocolate chips and some of the bitter sweet chocolate.
5. Bake in preheated oven 350 F for 25 mins or till done.
Make 12 muffins