Melt the butter in a medium sauce-pan. This smooth, rich-tasting chestnut soup makes a great winter night treat. Toss in 30 or so *cooked chestnuts, stir around until they are coated with the sauteed mixture. This soup is a combination of delicious chestnuts, onion, rosemary, a bouillon cube, milk and butter. Add the carrot, celery and onion and cook over moderately low heat, stirring, until softened, about 10 minutes. https://thishealthykitchen.com/creamy-chestnut-soup-vegangf French chestnut soup is creamy, flavorful, hearty and nourishing. More Soup Recipes. Serve in hot bowls, swirl some cream over the top and sprinkle with chopped parsley and pepper. It may be about to become your favorite Winter soup! Add several (6 or so) cups of cold water. Bring to a boil, then turn the burner down to simmer until the chestnuts are tender. Chestnut Soup In a large heavy soup pan, saute a chopped large onion, three tall thin carrots, and the heart of the celery with their tender tops with a tad of oil or butter.