Vegetarian French Onion Soup
Slice onions as thinly as possible for best presentation and texture. You can use yellow onions instead of sweet, if desired.
Substitute dry white wine for fino dry sherry and dried thyme for herbes de Provence if you don't have them on hand.
Add another 32-ounce carton of mushroom broth if you prefer a thinner, soupier consistency; the recipe as written produces a thick soup.