Reply To: what are the halachos for using a blech on shabbos?

Please check with your Rav. It is not necessarily simple, and there are different opinions. The only thing you can be sure of is that if you put something on the blech well before shabbos and don’t touch it till you are ready to eat it, you are ok. Whether you can move the food around on the blech,uncover-recover food, put other food on the blech during shabbos,remove food and return it to the blech, all these are not simple questions and you are best off asking your Rav.