/ck/ - Food & Cooking

I'm making scalloped potatoes, and the recipe calls for 2-3 cups of "grated cheese", which I imagine means parmesan. All I have, however, is pecorino romano, which is similar, but stronger and saltier. Any ideas on how to compensate for this difference in flavor?

http://www.food.com/recipe/scalloped-potatoes-and-ham-with-cheese-16682