This is more of a question, can you cook with the oils(that usually come in cartridges) and put them into the food? Obviously before preparing it, and will it get you high? Or what would be another way to do this since this are technically smell less!
So, shooting from the hip and taking an assumption. If you are using a distillate pen and it is something at 89% THC by volume, what you are using is a fully activated product and they are using terpenes as their mixing agent. I mean, if they say unsafe for eating, I suppose I can't say eat it, but, assuming these things, I could not imagine why you could not eat it. VG/PG/PEG/Terpenes, all of these things they use in these pens have been eaten far longer than vaped. But, from what I've found, they charge so much for those pens, and 1g makes almost three of them. I can get hash at $30 / gram if I buy by the 1/4, these pens retail for what, $40+ a piece? So the equivalent hash cost is what, $80+ / gram if buying the pens for this. Still, I could not see why these could not be consumed considering the common ingredients that are used in them, but, of course, I do not know what you have, so, I have to say, consult the dispensary/manufacture and ask.