I have also converted the recipe to Weight Watchers points, with substitutions, see my notes at the end.
What you need:
1 package ziti pasta (16oz)
1 jar spagetti sauce (26oz)
1 container ricotta cheese (15 oz)
1 package shredded mozzerella cheese (8 oz)
1/4c grated parmesan cheese
Preheat oven to 350 degrees. Cook pasta as directed on package. Drain pasta, reserving 1/2 cup of the pasta cooking water.
Mix spaghetti sauce, ricotta, and reserved water in a cooking bowl. Add pasta and 1/2 cup of the mozzarella cheese; mix lightly, sppon into a 13x9 baking dish sprayed with cooking spray. Sprinkle with remaining mozzarella cheese and the parmesan cheese. Cover with foil.
Bake 30 mins. Uncover and bake an additional 10 minutes or until heated through and the cheese is slightly browned.
This recipe is from the Kraft website.
MY NOTES: I made this slightly more healthy, making it 8 servings, one serving is 7.5 Weight Watchers points. I used regular ziti pasta (if you use whole grain the points will drop slightly), Ragu light tomato basil spagetti sauce, part skim ricotta cheese, and only 1/3c mozzerella cheese. I only added the cheese to the top of the pasta before baking instead of in the pasta since I didn't use much. The pasta was still full of lots of flavor!