how about chocolate mug cake? you will need:
4 tablespoons of flour
4 tablespoons of sugar
2 tablespoons of cocoa
1 egg
3 tablespoons of oil
3 tablespoons of choc drops (optional)
vanilla essence
1 mug
1 microwave
combine 1st 3 ingredients in mug, mix to combine. add egg, mix well. add milk and oil, mix well. add choc drops if desired and a splash of vanilla essence.
microwave for 3 mins 30 secs on max (1000 watt).
wait till it stops rising and settles in mug, then tip it out.
never made it myself but have it on good authority that it works well. very easy to do and no washing up (apart from the mug and a tablespoon).