DaasYochid -“Health,
The Aruch Hashulchan is only matir if it’s an employee, and one of the factors is that a Jew will likely aid in the cooking, which certainly can’t be said in this case.”
The Rishon who this comes from is not Mechalek. Also, the Jew helped by making the Chulent and putting it in the crockpot.
And there is a Kal V’chomer -If an employee is Mutter because you won’t get close to him because he is getting paid, for sure some stranger off the street whom you won’t probably ever see again -you won’t get close to.
“I don’t know who your rov is or what his sources might be; the Shmiras Shabbos K’hilchoso clearly includes an elictric hot plate in the category of “aish”, and the IG”M holds that even a microwave can produce bishul D’oraiso, so even were we to find a source that a covered element is not aish, according to the IG”M it would still be bishul D’oraiso.”
Please don’t bring Rayos from other things. It (crock pot) might be similar to a hot plate, but in No way is it similar to a microwave.