Garnish: scallion curls or Herbed Garlic Croutons (optional). In Dutch oven or 4-5 qt saucepan, heat oil. Stir in carrots and onion; saute until tender, about 5 minutes. Add remaining ingredients, increase heat, and cover. When mixture reaches a boil, reduce heat to med and simmer for about 5 minutes. Top with garnish if desired.