Some diner desserts (4)
I believe the answer is:
pies
'some diner desserts' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pies that I've seen before include "Pastries" , "Pastry-topped puddings" , "See 1 Across" , "Pastry dishes" , "food" .)