Gourmet preserve put on cooked pie (7)
I believe the answer is:
epicure
'gourmet' is the definition.
(I know that gourmet can be written as epicure)
'preserve put on cooked pie' is the wordplay.
'preserve' becomes 'cure' (curing is a kind of preserving).
'put on' says to put letters next to each other (some letters go on or after others).
'cooked' indicates anagramming the letters (letters cooked into a new form).
'pie' anagrammed gives 'epi'.
'cure' put after 'epi' is 'EPICURE'.
(Other definitions for epicure that I've seen before include "discriminating person" , "One enjoying fine food and drink" , "Person with refined taste in food and drink" , "One enjoying good food and drink" , "Gourmet" .)