Chicken Soup for the Soul - With legumes

2 chicken carcasses, with wings 1 large carrot , peeled and cut into 3 1 parsnip , peeled and cut into 2 1 large onion , some of the skin left on (it gives[...]

1 cup fresh mushrooms , sliced 2 stalks celery , sliced thinly 1 medium carrot , chopped 1 medium onion , diced 1 tablespoon butter 5 cups chicken stock 2[...]