Stew has turkey in creole cooking (9)
I believe the answer is:
casserole
'stew' is the definition.
(I've seen this before)
'turkey in creole cooking' is the wordplay.
'turkey' becomes 'ass' (I've seen this before).
'in' is an insertion indicator.
'cooking' indicates an anagram.
'creole' with letters rearranged gives 'cerole'.
'ass' put inside 'cerole' is 'CASSEROLE'.
'has' acts as a link.
(Other definitions for casserole that I've seen before include "Meat dish" , "Stew; dish" , "Dish cooked in an earthenware pot" , "So cereals may be used for this oven-cooked covered dish" , "Large cooking dish" .)