Sprinkle the steaks with salt and freshly ground pepper and place under a preheated hot grill for one minute on each side, to seal the meat. Allow to completely cool.
Roll out the pastry to a thickness of about ¼" (5mm). If you can buy the pastry already rolled, so much the better. Spread the cooled steaks with the pâté and wrap each one in pastry, with the join underneath. Decorate the tops with shapes cut from the pastry trimmings and brush with beaten egg yolk.
Bake on a flat baking tray in a preheated hot oven (Mk 7 - 425ºF - 220ºC) for 15-20 minutes until golden brown. Serve with Potato and Pea Nests and a little White Sauce.