Preheat the oven to 350°F. In a small bowl, mix together the Parmesan and rosemary and season with pepper.

Drop tablespoonfuls of the cheese mixture 2 inches apart onto a nonstick or parchment paper-lined baking sheet. Using your fingers, pat down the mounds into 3-inch rounds and bake until the cheese is melted with golden brown edges, 5 to 6 minutes. Let cool on the baking sheet for a few moments to firm up, then, using a spatula, transfer the crisps to a cooling rack to cool completely.