Meat cooked in ovens? (7)
I believe the answer is:
venison
'meat' is the definition.
(I know that venison is a game meat)
'cooked in ovens' is the wordplay.
'cooked' indicates anagramming the letters (letters cooked into a new form).
'in'+'ovens'='inovens'
'inovens' anagrammed gives 'VENISON'.
(Other definitions for venison that I've seen before include "Flesh of deer" , "Deer (as food)" , "Type of meat" , "Meat - in ovens (anag)" , "Game" .)