Hardees used to make one called the Huskie. They were large and delicious. There was so much juice in them that they were served in clear plastic sort of bags which kept the liquids from leaking on you.
I bet they were really unhealthy but boy they were good. This was also in the 60s.
They used to make some big burgers and roast beef samwiches were good too.. as to health, that’s 40 plus years ago.. bring it on!