When you grate parmesan cheese and bake it, the cheese melts to form a delicate wafer-thin crisp that's a savory snack or, when a toothpick is added as a holder, a whimsical cocktail nibble. Poppy seeds and a mixture of white and black sesame seeds are added here for more flavor, texture, and eye appeal. You'll need a thin spatula, preferably an offset spatula, and a careful hand to remove the cheese pops from the baking sheet; lining the sheet with parchment is essential, too.