Fruit pie pen-pal cooked (9)
I believe the answer is:
pineapple
'fruit' is the definition.
(pineapple is a kind of fruit)
'pie pen-pal cooked' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'pie'+'pen'+'pal'='piepenpal'
'piepenpal' is an anagram of 'PINEAPPLE'.
(Other definitions for pineapple that I've seen before include "Juicy tropical fruit or slang hand grenade" , "Fruit (tree and fruit!)" , "Juicy tropical fruit often sold segmented" , "that might go off?" , "Large juicy tropical fruit, or a grenade" .)