Double chocolate cheesecake

1. Crush the biscuits and mix with the melted butter. Press the biscuit mixture into the base of a 20cm springform tin. Mix the cream cheese with the mascarpone. Fold the milk chocolate into the cream cheese mix and then stir in the dark chocolate so that it looks streaky.

2. Spoon into the tin, level the top and chill for 2 hours or overnight.