Beat the butter and sugar together till creamed. Grab a mug and whip the egg and slowly add and mix. Add the flour and cocoa powder till mixed. Add the vanilla extract and milk and mix

Get the mix and put it in the cup cake cases ready to cook. Cook at gas mark 5.

Wen cooked let them chill. Meanwhile combined the butter and icing sugar and dye green add this to the chilled cup cakes. Now make little stars out of fondant and add on top. Add the smarties and sever