Step by step

Line the cake tin with the pastry, then spread the custard over the pastry so as to cover the whole of the bottom

Tips
As you add a little baking powder to the pastry, bear in mind that you'll need to leave a small space at the edge of the mould for the pastry to expand slightly. Also, don’t put the custard on the pastry whilst it’s still hot - in fact, it should be at room temperature! Another tip: if you prepare the filling in advance, cover it with cling film so it doesn’t create an annoying ‘skin’.
Trivia
Cheesecake is so named because it is prepared with cheese, in this case ricotta. Traditionally there are two types of cheesecake, baked and uncooked. This is the cooked version.