Preheat the oven to 400 F. Place the defrosted puff pastry on top of a large shallow baking sheet. Unfold and roll the defrosted puff pastry sheet to about 16" x 12" rectangular shape.
Bake just until it turns a little light brown about 8-10 minutes. Remove the shell from the oven. Sprinkle with the shredded cheese and lay the asparagus alternating the ends and tips.