*Note: You can substitute freely mix and match, and adjust the amounts of each cheese to suit what you have on hand, as long as you end up with approximately 9 ounces total of grated cheese. Use your imagination! I’ve swapped in various amounts of Parmesan, gruyere, gouda, and emmenthal with success. I would recommend keeping in the 5-6 ounces of ricotta, because its creamy texture helps the other, grated cheeses bind together nicely.