A novelty, but a good one. Fun to make, fun to eat:
2 pounds lean ground beef
crumbled blue cheese or cheddar or sauteed mushrooms or whatever filling you like.
Make two equal sized patties from the beef about 12 inches in diameter
Spread filling over bottom patty, cover with top patty. crimping edges between the two.
Bake on cookie sheet at 375 degrees for about 30 minutes.
As a side I like onion rings with this dish.