Please go to http://www.generalmills.com/flour to read an important message from General Mills regarding their 5/31/16 FLOUR RECALL.
Bring a pot of water to a boil for the macaroni. Salt it liberally and cook pasta to just shy of al dente—about 7 minutes for whole wheat, about 6 for white pasta.
Place stock, garlic and onion in a Dutch oven and bring to a boil. Add whole head of cauliflower, cover and simmer 15-20 minutes until the cauliflower is very tender. Remove to a plate and strain the stock.