Baking dish Mike somehow managed without (7)
I believe the answer is:
ramekin
'baking dish' is the definition.
(I've seen this before)
'mike somehow managed without' is the wordplay.
'somehow' indicates an anagram.
'managed' becomes 'ran' (I've seen this in another clue).
'without' indicates putting letters inside.
'mike' anagrammed gives 'meki'.
'meki' put into 'ran' is 'RAMEKIN'.
(Other definitions for ramekin that I've seen before include "Small fireproof bowl" , "Small (savoury) dish for one person" , "Baking dish for one person" , "Small ovenproof dish" , "pot" .)