The most common and most likely answer to this crossword clue is the 12 letter word PROFITEROLES
I've seen this crossword clue in The Daily Telegraph
P
R
O
F
I
T
E
R
O
L
E
S
More clues leading to the result PROFITEROLES
Buddy explains!
The straight part
We know that "pastries" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pastries = profiteroles.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PROFITEROLES mean?
PROFITEROLES noun- A small, hollow case of choux pastry with a filling.