Preheat the oven to 200°C (180 fan) Roll out the pastry on a lightly-floured surface to at least 5cm (2in) larger than the top of a pudding or pie dish. Cut out a circle, and then score it. Spoon the meat mixture into the bowl and add pieces of Stilton. Wet around the top of the dish, place a collar of pastry around, made from trimmings, and then put on the lid. Seal the edges well; tuck the excess pastry under the rim.