4 tbsp sugar
4 tbsp flour
2 tbsp cocoa powder
2 tbsp vegetable oil
2 tbsp cold water
Combine the sugar, flour and cocoa in a large coffee mug (or a ceramic bowl), mix well with a fork. Add oil and water and mix well until mixture pulls away from sides of mug. I find that using a mashing motion with the fork near the side of the mug while I turn the mug finishes up the mixing nicely. Pat down level with the fork. Cook in microwave for 1-2 minutes.
USE AN OVEN MITT!!! LET COOL UNTIL THE BOTTOM OF THE MUG IS JUST WARM BEFORE EATING!!! THESE BROWNIES AND SOME COFFEE MUGS CAN GET VERY HOT AND STAY HOT FOR LONG PERIODS!!!
You'll probably need to expiriment with time for your particular microwave. I say start at 90 seconds and adjust accordingly. You won't get sick if it's a bit undercooked either as there is no egg in it.
Eat it with a spoon. A fork just won't get all the bits of fudgy goodness, leaving them behind and you will be smitten by the dessert Gods.
My favorite way to eat this is warm amd topped with a scoop of vanilla ice cream. Ahmigahd.