Some scampi eaten in dish (3)
I believe the answer is:
pie
'dish' is the definition.
(I've seen this before)
'some scampi eaten in' is the wordplay.
'in' indicates the answer is hidden within the clue.
'PIE' can be found hidden inside 'some scampi eaten'.
(Other definitions for pie that I've seen before include "where blackbirds sang" , "Confused, mixed type" , "Pastry product" , "Pastry-topped dish" , "In the sky, this is wishful thinking" .)