Scallion & Edam Strudel                 7 oz. defrosted pastry, rolled out very thin 5 oz. scallions, sliced 1 onion, finely chopped 1 cup Edam cheese, grated 1 egg, beaten 1 green salad to serve           Preheat oven to 400°F (200°C). Fold pastry into an oblong, twice. Roll firmly until thin again. Combine scallions and cheese. Spoon mixture into center of pastry. Brush edges of pastry with half the egg. Roll pastry and crimp shut. Cut 1 inch slices into top of pastry. Bake for 40 minutes until golden. Serve hot or cold with a green salad.           Serves 4