HEAT dressing in large nonstick skillet on medium-high heat. Add onions, celery and carrots; cook 2 min. or until crisp-tender, stirring occasionally. Spoon into slow cooker. Add tomatoes, beans, broth, water and seasoning; stir. Cover with lid.
COOK on LOW 6 hours (or on HIGH 3 hours).
STIR in macaroni; cook 10 to 15 min. or until macaroni is tender. Sprinkle with cheese just before serving.