Sprinkle about 1 tablespoon Parmesan cheese, forming a 2-inch round, on an aluminum-foil lined baking sheet coated with cooking spray. Repeat with remaining cheese, leaving 1 inch between rounds.
Bake at 350° for 8 minutes or until lightly browned. Quickly remove cheese crisps from baking sheet with a spatula. Cool on a wire rack. Store in an airtight container.