I saw something like this on the Food Network the other day and decided to adapt it to what I have in my fridge. I'd some frozen pulled pork in the freezer, and a boneless ribeye steak. Into the meat grinder went the ribeye, then formed into generous patties and grilled to medium well - I've done this many times, and it is like eating a ribeye steak on a bun, absolutely delicious.
Here's the new stuff: next, topped with pulled pork and a generous heaping of caramelized onion. Finally Sweet Baby Ray's Chipotle BBQ sauce and a bit of mustard.
Savory ribeye beef and smoky pulled pork with sweet caramelized onion, capped with the sauces - it was a memorable sammie