Quiche shape (3)
I believe the answer is:
pie
'quiche shape' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pie that I've seen before include "Food baked under pastry" , "Type of chart" , "Dish baked in pastry-lined pan" , "Very easy answer as" , "A baked dish covered with pastry" .)