Spaghetti Pizza Bake combines the best of spaghetti with the best of pizza! It includes pizza toppings like pepperoni, mushrooms and olives on a layer of spaghetti, spaghetti sauce and ground beef. It’s topped with mozzarella cheese for a savory and delicious pasta entree that’s kid-friendly and utterly delightful. Great recipe for company since it makes so many servings.