Rustled up a fruit pastry (7)
I believe the answer is:
strudel
'a fruit pastry' is the definition.
(I've seen this in another clue)
'rustled up' is the wordplay.
'up' indicates anagramming the letters (letters get chucked up).
'rustled' with letters rearranged gives 'STRUDEL'.
(Other definitions for strudel that I've seen before include "Pastry with filling (usually apple)" , "Austrian fruit-filled pastry" , "food" , "German pie" , "See 6" .)