This is my favorite one. I used this a lot when I was in college. :)
4 tablespoons
flour (cake flour) 4 tablespoons
sugar 2 tablespoons
cocoa powder 1/8 teaspoon
baking powder 1/8 teaspoon
salt (a pinch!) 1
egg, beaten 3 tablespoons
milk 3 tablespoons
oil 2-3 drops
vanilla (optional) In a small bowl, sift together the flour, sugar, cocoa, tiny pinch baking powder and tiny pinch salt. (This can also be mixed directly into a large mug).
Add egg and mix into dry mixture.Add oil and milk and mix well.Grease a tall, large mug, and pour in this mixture, scraping out with a spatula.Place in microwave on High for 2 1/2 - 3 minutes and VOILA!