Foodbme
What kind of Pre-made Fod are you talking about?
I ran into the same thing here. There's very little to comply with when you sell only "pre-made" foods. i.e Hot dogs, sausages, soups from a can, chili from a can etc...
The big problem with that approach is, that it limits you to selling a product that is made by someone else and you are not allowed to improve on that. So if you wanted to add your version of dog chili, sauerkraut, BBQ chicken - you cant. You cant even add spices! (at least this is the word I got from my HD on the issue) So the other option is to sell under a "Mobile Kitchen, Cart, Concession trailer ect".
If you dont want to be bothered with the extra work at compliance, (and im not saying this is the case) I would suggest saving yourself some time and find another way make some money. Selling pre-packaged food without the ability to "season" it and make it your own special presentation will not get you many sales and even less repeat customers.
I would follow the advice of those in your state and apply for the particularly titled license, that will allow you to have a grill and other foods. The biggest issue will be getting access to a commissary.
If your not getting the right answers from the office that your asking at,.......I tend to think that you havent gotten in touch with the right person yet. Those people that run the departments have all the info on hand and "usually" have a packet all put together to hand to you.