high 3 minutes. Stir flour into onion mixture. Using wire whisk in a salad bowl, blend milk into mixture; recover. Stirring with whisk after every 2 minutes, microwave on high 6-7 minutes, or until thickened. Stir mozzarella cheese into mixture and set aside. Place broccoli and bell pepper in a 1-quart casserole. Cover and microwave on high 2-3 minutes. Drain pasta and stir reserved sauce into it along with the vegetables. Sprinkle Parmesan cheese on top and serve immediately.