1. Cook macaroni to desired doneness as directed on package. Drain.
2. Meanwhile, heat oven to 350 degrees F. Spray 2-quart casserole dish with nonstick cooking spray. In large bowl, combine all remaining casserole ingredients; stir to combine.
3. Add cooked macaroni; stir gently to mix. Pour mixture into sprayed casserole dish. Sprinkle with corn flake crumbs. Gently spray crumbs with butter-flavored nonstick cooking spray.
4. Bake at 350 degrees F for 25 to 35 minutes or until thoroughly heated.