Continuing with my theme of really easy but impressive looking recipes here’s a cheesecake that no-one could mess up, and that is supremely delicious. It takes about twenty minutes to prepare and then 40 to cook – so is ready in an hour!  (Well you should let it cool…) I like to serve sparkling wine with this desert, and Pongracz is up there with the best sparkling wines in the world.  Ingredients 8 digestive biscuits 50g butter , melted 600g cream cheese 2 tbsp plain flour 175g caster sugar vanilla extract 2 eggs , plus 1 yolk 142ml pot soured cream 300g raspberries 1 tbsp icing sugar  Method Heat the oven to 180C/fan 160C/gas 4. Crush the biscuits in a food processor (or put in a plastic bag…