Court hearing about bakery product (8)
I believe the answer is:
tribunal
'court' is the definition.
(synonyms)
'hearing about bakery product' is the wordplay.
'hearing' becomes 'trial' (as in a court case).
'about' is an insertion indicator.
'bakery product' becomes 'bun'.
'trial' enclosing 'bun' is 'TRIBUNAL'.
(Other definitions for tribunal that I've seen before include "Court appointed to look into a particular matter" , "Adjudicating board" , "examination" , "Court of arbitration - unlit bar (anag)" , "Official board" .)