1Heat oven to 425°F. Spray 2-quart casserole with nonstick cooking spray. In large saucepan, cook macaroni to desired doneness as directed on package. Add vegetables; cook 1 minute. Drain; rinse with hot water.
2In sprayed casserole, combine cooked macaroni-vegetable mixture and all remaining ingredients; mix well. Cover.
3Bake at 425°F. for 25 minutes. Remove from oven; stir to blend cheese. Cover; bake an additional 5 to 10 minutes or until thoroughly heated and cheese is completely melted. Let stand 5 minutes. Stir just before serving.