Gateau served with red meat in hunks (8)
I believe the answer is:
beefcake
'hunks' is the definition.
(beefcake can mean attractive men)
'gateau served with red meat' is the wordplay.
'gateau' becomes 'cake' (I've seen this before).
'served with' is a charade indicator (letters next to each other).
'red meat' becomes 'beef'.
'cake' after 'beef' is 'BEEFCAKE'.
'in' is the link.
(Other definitions for beefcake that I've seen before include "Hunk" , "Displayed male muscles" , "Photograph of a muscular man in minimal attire" , "Attractive muscular men" , "Men displaying muscles" .)