It's super easy, and pretty tasty too. He likes to eat his with whipped cream, I liked it with custard! But, you can add whatever you fancy to your mug cake. :)
What you'll need:
4 tablespoons self-raising flour
4 tablespoons sugar
2 tablespoons cocoa powder (I just used hot chocolate powder)
3 tablespoons milk
3 tablespoons olive/vegetable oil
2 tablespoons of nutella
1 large mug
How to make it:
Then I add the egg, milk and oil to the mixture and mix again.
Then I add the nutella, and yes you guessed it, MIX!
Put it in the microwave until it's firm and fluffy (mine takes about 3-4 mins) and your chocolate mug cake is ready! Add your own bits and bobs and you're ready to eat.