To cook puff pastry, you will need: 1 sheet of puff pastry 1 egg 1 tablespoon of water Instructions: 1. Firstly, heat your oven to 400 degrees F (200 degrees C). Line a baking sheet with parchment paper and set it aside. 2. Next, on a lightly floured surface, roll out the puff pastry to about 1/8 inch (3 mm) thick with a knife or a pizza cutter to cut the pastry into desired shapes. You can prepare them as big or as small as you like. 3. In a small bowl, whisk together the egg and the water to make an egg wash. Next, brush the egg wash over the top of each piece of pastry. 4. Place the pastry pieces on the prepared baking sheet and bake for 10-12 minutes, or until they are golden brown. 5. Enjoy!