Thought it was great as-is...Definitely adding to my list of "Acceptable Vegetarian" dishes!
We tried this recipe last night and tweaked it to our tastes. Because we had tomato sauce leftover we added that, about 2 Cups. We also substituted Red Curry paste for the Cumin to give it more of a kick because we like things spicy. Definitely recommend using the veggie stock. We used Better than Bouillon and it has a great flavor. We chopped up fresh spinach at the end and poured the soup over it and mixed. Great recipe.