Earthenware cooking dish (7)
I believe the answer is:
terrine
'earthenware cooking dish' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for terrine that I've seen before include "Oval, earthenware cooking dish" , "Type of dish" , "A coarse pate, its dish" , "Oval dish for pate" , "Cooked dish" .)