Preheat the oven to 350. Prepare a 13 "x 9" pan with cooking spray; set aside. In a mixing bowl, combine hot spaghetti, eggs, half cup parmesan cheese, and salt. Mix well. Pour mixture onto bottom of prepared pan. Spread cottage cheese evenly over spaghetti mixture. Top with spaghetti sauce. Sprinkle with mozzarella cheese and remaining parmesan cheese. Bake, uncovered, for 25 minutes, or until cheese has melted. Cool for ten minutes before cutting into wedges.