Combine dry ingredients and mix very, very well.
Add liquid, stir, then transfer to a little dish, ramekin, or even a coffee mug.
Either microwave 40-60 seconds (time will depend on microwave wattage) OR cook in a 350F oven for about 14 minutes.
If you don’t want to eat it straight out of the dish, be sure to spray your dish first and then wait for the mug cake to cool before trying to remove it.
Frosting ideas are listed above in the post!View Nutrition Facts