If you like Hershey's peanut butter cups, then these are for you. They aren't the healthiest of options, but as a treat they're very moreish. Great as a packed lunch surprise for no1 son, who's working long hours during the Olympics. - hope it will give him extra energy!
120g unsalted butter
175g icing sugar
12 digestive biscuits made into crumbs
90g chocolate chips or chopped chocolate