Fool taken in by phoney Creole dish (9)
I believe the answer is:
casserole
'dish' is the definition.
(I've seen this before)
'fool taken in by phoney creole' is the wordplay.
'fool' becomes 'ass' (ass is a kind of fool).
'taken in by' means one lot of letters goes inside another.
'phoney' indicates anagramming the letters.
'creole' with letters rearranged gives 'cerole'.
'ass' placed inside 'cerole' is 'CASSEROLE'.
(Other definitions for casserole that I've seen before include "So cereals may be used for this oven-cooked covered dish" , "Stew-pan" , "Large cooking dish" , "Stew; dish" , "Dish cooked in an earthenware pot" .)