Mary Berry's Lemon and Lime Cheesecake is heaven:
100g digestives
50g butter
1 tbsp caster sugar
1 x 250g mascarpone
1 x 375g can full-fat condensed milk (low-fat won't set!)
juice of 1 small lemon
3 tbsp lemon curd
finely grated zest and juice of 2 lemons.
CAN BE MADE UP TO 24 HOURS AHEAD.
20cm/8in shallow springform cake tin
Crush the biscuits with a rolling pin until they are fine crumbs.
Melt the butter in a pan and add the crumbs and sugar. Stir. Press biscuits into the tin to make an even layer. Put in the fridge to firm whilst you are making the filling.
Using an electric whisk, whisk the mascarpone and condensed milk.
Add the lemon juice and curd and nearly all the lime zest (keep some back for garnish) and juice and whisk until thick and creamy.
Spoon on top of the biscuit base. Level the tops, cover with clingfilm and chill for a minimum of 2 hours.
Decorate with the reserved lime zest and extra fresh raspberries on the side.
It is absolutely gorgeous, I've already made it twice and am making it for Christmas and New Year.