Just a basic recipe. You can add meat to the sauce or spinach to the cheese, or anything that strikes your fancy. Serves about 10.
Cook the shells in salted water, drain, and rinse in cool water. Mix them up with olive oil so they don't stick together.
Preheat the oven to 350. Mix into the ricotta cheese all the seasoning, the parmesan, and 3 of the cups of mozzarella.
Spread a little sauce in the bottom of an oven-proof pan or dish. Stuff each shell with about 1/2-1/3 cup of cheese filling and lay the stuffed shells close together.
Top with the rest of the pasta sauce, and sprinkled the remaining mozzarella on top of that. Cover loosely with foil and cook for 45 minutes or longer, until it's bubbly.