Grab a big microwave-proof mug
Wrub a little amount of butter inside the mug so it won't be too sticky when you get it out ^^
Then just put everything in your mug,mix the ingredients.
Set the microwave on High (my english sucks..) and let it cook for 1 minute
Stirr again, and put it back into the microwave, then let it cook for 1 to 2 minutes
Watch your hands cause the mug is kinda hot!!