Dish and large articles engulfing sink (7)
I believe the answer is:
'dish' is the definition.
(lasagna is a kind of dish)
'large articles engulfing sink' is the wordplay.
'large' becomes 'L' (eg in clothes sizes).
'articles' becomes 'ana' ('an' and 'a', English indefinite articles).
'engulfing' is an insertion indicator.
'sink' becomes 'sag' (sagging is a kind of sinking).
'ana' going around 'sag' is 'asagna'.
'and' is the link.
(Other definitions for lasagna that I've seen before include "Italian food" , "pasta's provided" , "Italian cooking" , "Italian dish" , "Broad flat pasta" .)