Yes, using cold smoked cheese and making the mac-n-cheese in the oven works just fine. I do that from time to time and people love it.
I have found that smoking a box of mac-n-cheese gives things an off flavor. I use a metal or glass pan, they work better than cardboard
The SS Platypus, sails again, to the support of the Vets!
"perhaps...but then again...maybe not..."