This one is the best part about the fall is begin able to spend a morning preparing vegetables and spices then having them simmer it….
Sauté onions and mushrooms till soft. Add broth and vinegar. Bring to a boil; cover, and simmer for 10 minutes
Heat oven to 400 degrees F and heat bread for 10 minutes; remove. Heat broiler.
Puree 1/2 the soup mixture; add back to pot, and heat. Divide into 4 broiler proof crocks, top with cheese and broil for 3 to 5 minutes.