1 pkg. (8 oz.) spaghetti
1/2 stick butter
2 eggs
1/2 c. Parmesan cheese
1 pkg. shredded Cheddar cheese
1 pkg. shredded Mozzarella cheese
1 lb. ground beef
32 oz. jar Prego spaghetti sauce

Combine cooked noodles, butter, eggs and Parmesan cheese. Combine meat and sauce. Spread noodle mixture into bottom of pan. Layer half of cheese and then meat sauce. Cook for 20 minutes on 350 degrees. Take out and put rest of cheese on top. Cook for 5 more minutes.