Preheat the oven to 400°F. Stretch finished puff pastry to a sheet ¼inch thick. Cut into halves.
Here are two ways to shape appetizers; you can cut the dough in many other shapes. Cut one portion into 2-inch squares. Brush surfaces with beaten egg, and sprinkle with some of the cheese.
Cut the other portion into strips 6inches long and 1inch wide. Put 2 strips together to make an X, then twist each end from the center out to make a spiral. Place the spirals on a baking sheet, brush with beaten egg, and sprinkle with grated cheese.
Bake both pastries in the preheated oven for 10 to 15 minutes, until the pastry has a nice color.