Add Parmesan cheese in 1 tablespoon dollops, then flatten each out into a circle.
Bake at 400 degrees for 5 minutes, or until edges are slightly browned.
Let cool for a couple of minutes, then peel off baking sheet and serve.
Notes
If you use pre-shredded Parmesan, bake for 3 minutes rather than five. Freshly shredded is highly recommended, however, and don't even try this with the powdered stuff in the green can...