Boil pepperoni 5 minutes and drain on paper towels.

Cook and drain spaghetti. Add parm cheese and mix

Brown ground beef with onions and drain grease

Mix tomato sauce, ground beef, onion and seasonings. Simmer for 20 minutes

Layer spaghetti, grated mozzarella, pepperoni and meat sauce. Top with sliced mozzarella

Bake uncovered at 350 for 20 minutes