Surprised to see pastry in transport (8)
I believe the answer is:
startled
'surprised' is the definition.
('startled' can be similar in meaning to 'surprised')
'pastry in transport' is the wordplay.
'pastry' becomes 'tart' (tart is a kind of pastry).
'in' indicates putting letters inside.
'transport' becomes 'sled' (sled is a kind of transport**).
'tart' put inside 'sled' is 'STARTLED'.
'to see' acts as a link.
(Other definitions for startled that I've seen before include "Shocked, alarmed" , "Stunned, shocked" , "Surprised with fright" , "Suddenly alarmed" , "Frightened or suprised suddenly" .)