1 sheet ready made puff pastry
1 leek, washed and chopped
1 medium potato, peeled and chopped into small chunks
1 egg, beaten
salt and black pepper
Place potato in a small pan of boiling water and cook until almost soft.
Fold the other half over the top and crimp the edges to seal. Place on a baking tray. Gently slash the top.
Cook at Gas 7/ 220˚C 425˚F for about 20 minutes.