I have done russets but not sweets should be no different except less time, I had meat on at 255 and did the potatoes just over an hour, onions I never did but would think the same
I've done whole sweet onions indirect on the OTG but have never done them on the smoker. I see no reason why they wouldn't cook just the same. If you haven't tried whole onions you will not believe how good they are. We leave the skins on, partically core them and place a mixture of butter and powdered beef bullion where the core was. It is helpful to make a foil ring to support the onions. Just grill/smoke until they squeeze tender.
After you are served, use your fork to gently peel the outer blackened skin away and ENJOY!
P.S. I didn't directly answer your question about temperature. On the grill, I run it about 300-350 degrees when doing onions. If you were going to do a high heat chicken cook on your WSM or Mini, I would suggest you put your onions on about thirty minutes before the chicken. They should finish fairly close to each other.
P.P.S. When I am trying something new on the grill (indirect) or the WSM's or Mini and am at loss for estimated cooking time, I just go to an oven recipe (after all, that's what we are doing with the WSM - an oven with smoke). Here's a Food Network recipe for baked potatoes in the oven. Use similar temperatures in the WSM and you should be close.
Ooh, those both sound really intriguing especially the onion thing! I've done onions on my OTS cut up with some butter salt and pepper indirect with low temp to carmelize them and they are awesome. I'll have to try the whole onions!
Thanks fellas! I'm gonna try slicing sweet potatoes in half ( cause they are huge ) and smoke at 225 for 2 hours .Also going to try Roberts technique on the onions. Will post pics!
Seasoned two lb top round and added some onions red / green peppers and 1 red onion for the wifey . The sweet potatoes on bottom rack. I'll report back later lads
Ciao for now
Paulie
Grill mates was on sale in cosco $4.29 for that huge bottle!