1 (8 oz.) pkg. ziti macaroni, cooked
1 (15 1/2 oz.) jar spaghetti sauce
1/2 c. shredded Mozzarella cheese (2 oz.)

In 2 quart casserole, combine ziti and spaghetti sauce. Heat, covered with glass lid, at medium high 8-9 minutes; stir once.

To complete: Sprinkle with cheese. Let stand, covered, 10 minutes before serving.