Microwave Cake in a Mug

Thanks so much to our reader Deeann for this fun, yummy and easy, easy, easy recipe! I've seen this floating on the internet and armed with Deeann's recipe I gave it a try with yummy results!
I think this would even be fun for April Fool's day served as Hot Chocolate Cake!Here's what you need:
4 tbsp. flour
4 tbsp. sugar
2 tbsp. cocoa
1 egg
3 tbsp. milk
3 tbsp. oil
3 tbsp. chocolate chips
splash vanilla
1 coffee mug

Here's what you do:
Add dry ingredients to the mug, mix well.
Add the egg and mix well.
Pour in the milk and oil, mix well.
Add the chocolate chips and vanilla, mix well.

Put the mug in the microwave and cook for 3 minutes at 1000 watts. The cake will rise over the top of the mug. Allow to cool. Enjoy!