Put 5 cups of vegetable broth and all remaining ingredients into a large pot. Bring to a boil, reduce heat, and simmer until vegetables are done, about 20-30 minutes. If the soup seems too thick, add more broth. Taste and adjust seasonings before serving.
The nutritional breakdown will vary depending on the ingredients you use. Nutrition (per serving) without optional starch and using Imagine No-Chicken Broth and California Blend Vegetables listed in the Nutritional Facts below.