Bring a large pot of lightly salted water to a boil.
Add pasta and cook for 8 to 10 minutes or until al dente; drain.
Meanwhile, place ground beef in a large, deep skillet. Cook over medium high heat until evenly brown.
Drain, crumble and combine with spaghetti sauce.
In a large bowl toss pasta with Parmesan cheese and eggs. Press into a 9-inch pie plate and spread sauce mixture over pasta. Top with American cheese and sprinkle with mozzarella.