This recipe is very, very dangerous. It is so simple to make, and you probably have all of the ingredients sitting in your cupboard at any given time, so beware! You might make this the first time and make it the next 2, 3 or 4 nights as well...
5-Minute Chocolate Mug Cake
4 tablespoons flour
4 tablespoons sugar
2 tablespoons cocoa
1 egg
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 on high. The cake will rise over the top of the mug. Allow to cool a little, and tip out onto a plate. (This is also excellent with a scoop of chocolate ice cream on the side.)