I have my own version which I think comes
close ... you're welcome to try it.
I simply cook the hamburger with a bit of
pepper, onion powder, salt, and I add
one envelope of brown gravy mix to it.
Usually I add a tablespoon or two of water
depending on how much hamburger I started with.
(If there isn't too much grease I don't drain
it and don't add water) Then just put them
together like they did. The gravy makes the
meat hold together and gives it added flavor.
I think it's just great!