This is the only way I like to eat digestives! (Or rich tea!)
Melt 100g butter, 3 dessert spoons drinking chocolate, 1 dessert spoon caster sugar, 2 tablespoons golden syrup.
Stir in 200g bashed up boring biscuits and 100g raisins. (Actually I used 50g raisins and 50g choped prunes.)
Squash into square tin, top with melted chocolate (about 200g) and leave to set in the fridge.