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The perfect Christmas gift for you or a loved one
First make the pastry. Rub the flours together with the butter and suet until the texture of breadcrumbs, then work in the milk until a pastry comes together. Knead the pastry on a work surface until soft. Press the pastry into a flat round shape, then chill for 1 hr while you make the filling.
Boil the potato for 10 mins until cooked, then drain well. To wilt the spinach, tip into a colander, pour over boiling water from a kettle, then squeeze out all the liquid. In a bowl, mix the spinach with the potatoes, cream, egg and two-thirds of the cheese. Season with salt, pepper and nutmeg, then set aside. Heat oven to 200C/fan 180C/gas 6.
Roll the pastry out on a floured surface to the thickness of a £1 coin. Cut out 8 squares approx 13 x 13cm. Spoon the mix between the centre of each square, then brush the edges with the beaten egg. Bring all 4 corners together over the filling, pinching the edges together to make a sealed purse.
Transfer to a baking tray. Brush each pie generously with egg, then top with a large pinch of grated cheese. Bake for 30 mins until golden and the cheese has melted, then leave to cool slightly. These are delicious warm but perfectly acceptable cold, too.