Surprise — no topping on top of the pastry (7)
I believe the answer is:
tartlet
This clue could be a double definition.
'surprise no topping on top' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'the pastry' is the second definition.
(tartlet is a kind of pastry)
'of' is the link.
Can you help me to learn more?
(Other definitions for tartlet that I've seen before include "Filled open pastry" , "single pastry" , "fare" , "Small open pastry" , "little cake" .)