Healer's potatoes cooked and hot (9)
I believe the answer is:
osteopath
'healer's' is the definition.
(osteopath is a kind of healer)
'potatoes cooked and hot' is the wordplay.
'cooked' is an anagram indicator.
'and' means one lot of letters go next to another.
'hot' becomes 'h' (abbreviation eg on taps).
'potatoes' anagrammed gives 'osteopat'.
'osteopat'+'h'='OSTEOPATH'
(Other definitions for osteopath that I've seen before include "One giving treatment" , "Potato she uses badly as a manipulator of the body" , "Therapist who manipulates the skeleton" , "Healer who manipulates the body" , "One manipulates bones and massages muscles" .)