These have been the most successful rocky roads I've made to date, and the most simple. Just 1 packet of smashed biscuits and a scattering of mini marshmallows coated in 3 bars of melted milk chocolate and left to set in a 20cm square tin.
I used chocolate digestives, but ginger biscuits or cookies work very well also. Smashed up crunchie bars can make these even more naughty.
