Are you tempted by those yummy looking slices in Starbucks but can't justify another couple of quid? Why not make a whole slab of the stuff for about a fiver. Plenty for the whole week.
Crack the chocolate into pieces and stick in a heat-proof bowl with the butter and syrup. Melt this over a pan of simmering water until smooth and glossy.
Crumble the biscuits into small pieces and stir into the dried fruit, coconut and marshmallows.
Pour all of these into the melted chocolate mixture and stir to combine and coat. Line a rectangular cake tin with cling film.
Transfer the rocky road to the lined tin and leave to set up in the fridge for a couple of hours.
Tip out onto a board and cut into chunky squares. Makes 20 chunky pieces