Eggy dessert (4)
I believe the answer is:
flan
'eggy dessert' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for flan that I've seen before include "Open pastry case with savoury filling" , "Quiche-like dish" , "Open pastry filled with savouries, fruit or custard" , "Open tart with a sweet or savoury filling" , "Open pastry dish" .)