A note from the home cook:
"This cake is super fast and easy to make. It's perfect for that 'sweet' craving we get and just don't know what to eat to fulfill it. I had this recipe for a few months and tonight I tried it and my husband loved it. I was impressed at the ease in which it took to make it."
Add dry ingredients to mug, and mix well (flour, sugar, cocoa).
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 at 1000 watts (on high). 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.