3-MINUTE CAKE IN A MUG

Why I Love This Recipe
I wanted to make a treat for my husband, but a whole cake sits around too long. So, I decided to make the Microwave Cake in a Mug recipe that has been flying around online lately.
Some people said they problems with the cake overflowing, and cautioned to use a large mug. Others had problems locating large, microwave safe mugs. The two cup Pyrex measuring cup worked perfectly. This recipe makes one very generous serving (OR easily serves two).
Ingredients You'll Need
1 large coffee mug * (see below)
4 tbsp flour (some recipes recommend cake flour)
4 tbsp sugar
2 tbsp unsweetened cocoa
1 egg
3 tbsp milk
3 tbsp vegetable oil
small splash of vanilla
3 tbsp chocolate chips (optional)
Directions
Spray mug with cooking spray, then mix together all the ingredients in the mug, in the order given: first mix all dry ingredients, add egg and mix, then milk, oil and vanilla and mix well. Stir in chocolate chips. ** (see below)
Place mug in microwave, and cook on high for 3 minutes (more or less depending on your microwave). The cake will rise over the top of the mug, but don't be alarmed. It will not overflow. Allow to cool a little then eat it with a spoon directly from the mug, or tip out onto a plate.
MY CHANGES:
* Use a two-cup Pyrex measuring cup instead of mug
** Mix the egg, milk, oil, and vanilla separately before adding to the dry ingredients (prevents tough cake due to overmixing).