Peppermint Crisp Pie

This outrageous pie is a base of crushed biscuits, a layer of caramel, a layer of whipped cream and then a scattering of crisp peppermint milk chocolate. It is incredibly rich and should probably be served in small spoonfuls, depending, of course, on your personal tastes. It makes me think of boarding school midnight feasts in books from the 1950s. You need to use chocolate bars with an apple-green crunchy filling, not a soft creamy centre. In South Africa we made this with ‘tennis’ biscuit