Mix flour, cocoa, sugar, egg, milk, oil, vanilla and chocolate chips together. Pour all into coffee mug and put in microwave for 3 to 4 min. It will rise to top of cup, but will not over. Take out of microwave and top with icing, ice cream, whipped topping or even with fresh fruit.
I really like chocolate so I tried this for the fun of it, and it really works. you'll love it. It's also really easy for the kids to make.