From ItsHelenMelon.
1. Find small thin shaped potatoes, they are sweeter. Chop off both ends. Slit skin in the centre (optional) for easy removal later.
2. Top rack at 190 deg C for 30 mins.
3. Remove and put in ice bath for 2 minutes.
4. Increase temp to 220 deg C and put in for final 30 mins. Even without slitting the skin, it should peel right off.
Recipe feedback
It works! I followed exactly and it does work. The skin didn't slip off as quickly as I expected but otherwise it works well.