Cook shells as package directs. Brown sausage with onion and garlic; drain. ... pan. Cover with spaghetti sauce and Mozzarella cheese. Cover ... 35 to 45 minutes.
Slice onions. Cut peppers into ... and chop. Slice sausage. Heat 1 tablespoon oil ... thickens, 10-15 minutes. Cook the spaghetti and serve with sauce.