Press the burgers into a sausage shape 30cm long.
Roll the pastry out thinly into an oblong approximately 30cm x 10cm. Brush one long side with egg wash.
Lay the burger meat in the middle of the pastry and fold over the pastry to meet the egg-washed side. Press gently and mark with a fork. To get a good flake flick the edge along with a knife. Fork along the top.
Cut into pieces.
Place onto a baking tray and bake 180C /Gas Mark 4 for about 20 minutes until golden and cooked through.