Line a round 9 inch spring form tin with parchment and preheat your oven to 170 degrees. Melt the butter in a heavy base saucepan large enough to accommodate all of the crushed biscuits.
Chocolate, cheesecake – what’s not to like ... then put them in a food processor and blitz them into crumbs. Add the melted butter and blend until mixed. Tip the mixture into the tin and ...