Preheat oven to 425° F (220° C). Combine Hellmann's® Real Mayonnaise with all other ingredients in large bowl and stir until vegetables are well-coated. Evenly spread vegetables in large shallow roasting pan or jelly-roll pan.
Roast until vegetables are tender and golden, stirring occasionally, about 35 minutes. Sprinkle, if desired, with chopped fresh parsley.