There's a few posts on mushrooms in the vegetable forum but I don't know how to attach a thread to a thread...hopefully someone will come attach them.
For my mushrooms, I put them in the smoker empty to cook for about an hour, then I stuff them with a mixture of cream cheese, onion, garlic salt, and bacon and put them back in the smoker for about 30 min. I find that if I don't pre-smoke them, the mushrooms don't get enough before the filling done. They're one of my favorites!
Many people use various forms of sausage and cheese...whatever you like is really allright. Lots of experimenting here!!