I made this today. It was very good. I would recommend using ground beef rather than stewed beef. Little bits of corn also goes well with this recipe.

Great comment about serving the next day. It is better. You can accomplish this same-day. Before adding warm soup, and sour cream, (after cooking beef, mushrooms broth, wine whatever...) put in covered pan in refrigerate for an hour, reheat slowly!!! Then add sour cream and soup.