You will need:
350 grams of cookies, cake or something like that (without jelly or cream)
50 grams of butter
4 tablespoons of cocoa
some rum flavoring
Melt the butter. Grind the cake and add cocoa, flavor and half of the butter. Mix. Add the rest of the butter. If it isn't sweet enough for you add some sugar.
Roll in chocolate chips, ground nuts or something like that.
Refrigerate for al least 2 hours. Take out of the refrigerator half an hour before eating.