TOSS together macaroni, broccoli, carrots, red pepper and green onion in large bowl.
WHISK oil, vinegar, parsley, mustard, salt and pepper in small bowl until well blended. Pour over macaroni mixture. Toss to coat well. Cover and refrigerate at least 3 hours. Stir in Parmesan cheese just before serving.
(1/6 of recipe)
*Percent Daily Values are based on a 2,000 calorie diet