8 oz. spaghetti
1/3 c. Parmesan cheese
2 beaten eggs
1 lb. ground beef
1 chopped onion
1 qt. Prego spaghetti sauce
3 c. shredded Mozzarella cheese
24 slices pepperoni

Cook spaghetti, according to package directions. Drain spaghetti and mix with Parmesan cheese and eggs. Pour into large baking dish. Brown beef and onions together and drain off fat. Layer beef mixture on top of spaghetti mixture. Pour spaghetti sauce on top of beef mixture. Top with Mozzarella and pepperoni. Bake at 350 degrees for 30 minutes.