A ghoul's cooked stew (7)
I believe the answer is:
goulash
'stew' is the definition.
(goulash is a kind of stew)
'a ghoul's cooked' is the wordplay.
'cooked' indicates anagramming the letters (letters cooked into a new form).
'a'+'ghouls'='aghouls'
'aghouls' anagrammed gives 'GOULASH'.
(Other definitions for goulash that I've seen before include "Paprika-based stew" , "Rich stew of Hungarian origin" , "Stew of meat and veg, seasoned with paprika" , "deal that nobody likes" , "Hungarian dish" .)