How did I miss this recipe? I'm so glad I looked at this thread!

I was going to cite this exact recipe too! I've made it -- it is divine. The cauliflower soup/sauce is worth making on its own. It is really delicious. The chickpea-meatballs are excellent too. It is a great make ahead meal.

I agree with boulangere. I was going to answer with them.

Take a look at these. If you don't thin the soup as much, it functions nicely as a sauce.
http://www.food52.com/recipe/meatless%20monday%20meatball%20soup