Just like it says.... E - Z !!!
3-4 c Spaghetti sauce (I use my homemade sauce, but your favorite jar sauce will work just fine)
15 oz Ricotta cheese
16 oz Ziti, cooked & drained
4 c Shredded Mozzarella cheese, divided
Salt & pepper to taste
1/4 c Parmesan cheese
Mix sauce & ricotta cheese in a large bowl. Add ziti, 3 cups of the mozzarella cheese, salt & pepper. Toss to mix well. Pour into a lightly greased 9x13 baking dish. Sprinkle with remaining mozzarella & Parmesan cheeses. Bake at 350 degrees for 40 minutes or until heated through.