Directions

1. Preheat the oven to 200°C/180°fan/Gas 6. Line a baking sheet with baking paper

2. Mix together the leek, potatoes, swede, onion and parsley and season well
3. Divide the pastry into four and roll each piece out into a circle
4. place a 23cm (9in) plate on top and cut around it. Brush water halfway around the edge and then pile a quarter of the vegetables into the centre
5. Add the cheese, pushing some into the vegetables. Sprinkle 1 teaspoon flour on top and add a knob of butter. Bring up the edges of the pastry and press together, then crimp around the edge. Place the pasty on the baking sheet, with the crimping over towards the right-hand side, rather than right on the top. Repeat to make another three pasties
6. Cut two small holes in the top of each pasty to allow steam to escape during cooking, then brush over the tops with egg

7. Bake for 15 minutes, then reduce the oven temperature to 180°C/160°fan/Gas 4 and bake for a further 45 minutes to ensure the vegetables are cooked through

8. Serve immediately or transfer to a wire rack to cool