My mom forwarded this recipe to me a couple months ago. It's fast and easy to make. I recommend putting chocolate chips in it!
5 MINUTE CHOCOLATE MUG CAKE
4 tablespoons flour
4 tablespoons sugar
2 tablespoons cocoa
3 tablespoons milk
3 tablespoons oil
3 tablespoons chocolate chips (optional)
A small splash of vanilla extract
1 large coffee mug
Add dry ingredients to mug, and mix well. Add the egg and mix thoroughly. Pour in the milk and oil and mix well. Add the chocolate chips (if using) and vanilla extract, and mix again.
Put your mug in the microwave and cook for 3 minutes. The cake will rise over the top of the mug, but don't be alarmed! Allow to cool a little, and tip out onto a plate if desired. It makes two servings.