I might as well include old standards in my recipe collection.
1. Fry together in a pot:
butter-oil
beef (ground or steak strips)
sliced onions and mushrooms
salt, pepper, nutmeg
2. Once cooked through, add a splash of cooking sherry. Cook another minute or so. Then mix in sour cream. If desired, add a little Kitchen Bouquet to make the sauce less white.
3. Serve with:
cooked spinach, with lots of butter and a little cider vinegar
rice or pasta
***I tried this once with fake vegetarian "ground beef," and it turned out lousy. So...for now, stroganoff is with real beef.