BOIL 6 cups water in medium saucepan. Stir in Macaroni; boil 7 to 10 minutes or until macaroni is tender. Remove macaroni from saucepan; drain.
MEANWHILE, melt vegetable oil spread in same saucepan. Add onion; cook and stir until tender.
ADD macaroni, Cheese Sauce Mix and remaining ingredients; mix well. Cook until heated through, stirring occasionally.