What you'll need:
1/4 cup flour
5 tbsp sugar
2 tbsp cocoa powder
1 egg
3 tbsp milk
3 tbsp vegetable oil
a dash each of salt & vanilla extract
Directions:
Whisk all of the ingredients together into a large microwave-safe mug until smooth. Microwave until puffed, about 2 minutes. Sprinkle with more cocoa powder. (note: The microwaving time could be more, depending on the wattage of your microwave. Just keep an eye on it while it's cooking. It will puff up & the edges will separate from the mug).
This is what it should look like when it's finished in the microwave:
At this stage it's good to go for the eating...The cake is warm & chocolatey and gooey, and great just the way it is. But since I always try to do something extra with a recipe if it's not my own, with this cake I just add fun toppings. Whatever you have on hand that you think would go well with it....whipped cream, powdered sugar, or in this case, I used Nutella. I have a big crush on Nutella. Seriously, it's addictive. If you're not familiar with it, no worries, I'm sure I'll write about it sooner or later. Here was my finished product: