Since the vegetables include potatoes your best bet would be a great side salad. Here are a couple to pick from.
http://www.bettycrocker.com/recipes/apple-blue-cheese-and-walnut-salad/0bed806a-9149-40ab-82b4-e2317fa9b756
http://www.bettycrocker.com/recipes/baby-romaine-and-grapefruit-salad/e43c31f2-3724-4900-b38e-619b061a378b