What happens next?

How to make parmesan crisps
Preheat your oven to 400 f (205 c) and line a large baking sheet with parchment paper.
You can also use a silicone baking sheet instead.
Place a tablespoon-sized mound of parmesan cheese onto the baking sheet.

OPTIONS:
[1]. If you want some extra crunch, consider using smaller large cheeses instead. If you'd like crunchier cheese, skip this step.
[2]. Make sure that the sauce lines the bottom of your pan. Drizzle a generous pinch of sauce over the cheese mound.
[3]. Try to use coarsely-grated parmesan cheese; it will look more like shredded parmesan. Avoid using the powdery, finely-grated parmesan cheese.
[4]. If you are making low-fat tuna or the kind that you cook on the grill, use either a little cheese or a pinch of chilli powder. If you are making half-fat tuna, use half-fat is best.
[3].