Rodent in baked dish for buccaneer (6)
I believe the answer is:
pirate
'buccaneer' is the definition.
(historical term for a pirate)
'rodent in baked dish' is the wordplay.
'rodent' becomes 'rat' (rat is a kind of rodent).
'in' is an insertion indicator.
'baked dish' becomes 'pie' (I've seen this in another clue).
'rat' inserted into 'pie' is 'PIRATE'.
'for' acts as a link.
(Other definitions for pirate that I've seen before include "sailor" , "Run off without permission" , "plagiarist" , "Hook for one" , "Rat pie (anag)" .)