Onion Basil Grilled Vegetables Recipe

In large bowl, combine all ingredients except butter. Toss to coat. Place on double-thickness of heavy-duty foil (about 28 in x 18 in), or place in medium-size foil pan. Dot with butter. Fold foil around vegetable mixture and seal tightly (if using foil pan, cover tightly with aluminum foil). Grill, covered, over medium heat for 25-30 minutes or until potatoes are tender.