Cook spaghetti from 2 packages of Kraft spaghetti dinner and brown 1 pound hamburger. Drain spaghetti and drain grease from hamburger. In 13"x9" casserole dish place a layer of spaghetti, 1/2 the hamburger, a can of spaghetti sauce from the Kraft dinner package. Cover with slices of cheese. Repeat layers of spaghetti, hamburger and spaghetti sauce. Top with both packages of Parmesan cheese from the dinners. Bake at 325 degrees for 20 minutes.