Mini cosmopolitan cheesecakes

Method

1. Whizz the biscuits and lime zest to fine crumbs in a food processor. Pour in the melted butter and whizz until combined. (If you don’t have a food processor, put the biscuits in a food bag, seal and bash to fine crumbs using a rolling pin, then transfer to a bowl and mix in the melted butter.)
2. Divide the buttery crumbs evenly among the holes of the muffin tin then, with the back of a spoon, press down and smooth the bases. Put the muffin tin on a large baking sheet and chill in the fridge to firm up the bases while you make the topping.
3. Put the cream cheese, ricotta, double cream, vanilla extract, icing sugar, finely grated orange zest and liqueur in a large mixing bowl, then beat with an electric mixer until smooth and thick. Using a spoon, divide the mixture evenly among the biscuit bases and level the surfaces, leaving a gap of about 0.5cm at the top of each. Cover the tin with cling film and put in the fridge while you make the jelly layer.
4. For the cosmopolitan jelly layer, put the gelatine leaves in a small bowl of cold water for 5 minutes to soften. Pour the cranberry juice, lime juice, orange liqueur and vodka into a small heavy-based pan and heat gently. Squeeze out the water from the gelatine leaves, then add to the warm cosmopolitan mix and whisk until dissolved. Remove from the heat and allow to cool for 5 minutes before pouring over the chilled cheesecake layer. Re-cover with cling film and leave to set in the fridge for at least 4 hours or overnight (see Make Ahead below).
5. To serve, remove the cheesecakes from the tin and decorate with thickly grated orange zest.