Oh wow. I hear you say. Yes, I thought so too. I simply had to share this amazing ness, and its so simple I have all the ingredients in the cupboard.
I saw this on http://twistedsifter.com/2013/01/50-life-hacks-to-simplify-your-world/ . And there were one or two other good suggestions, but this one is just awesome. So try it out guys. 🙂 If you click on the image it gets bigger.
For a lovely alternative set of pictures go to http://frogandcount.wordpress.com/2013/05/13/how-to-make-brownie-in-a-mug/ where a fellow blogger has tried it out, quite successfully it seems and documented it for us all to see. 🙂