Brown meat with onion and garlic. Drain and allow to cool slightly. Add breadcrumbs, egg, salt, pepper, mozzarella cheese,parsley and oregano. Mix well. Boil shells until almost done. Drain and rinse in cool water. Stuff shells with meat mixture. Spread 1/4 c sauce in bottom of pan and place shells on top of sauce, side by side. Pour remaining sauce over shells and top with extra cheese and Parmesan. Bake at 350 for 30-40 minutes.