Handle a nice surprise (5)
I believe the answer is:
treat
I believe this clue is a double definition.
'handle' is the first definition.
(I know that handle can be written as treat)
'a nice surprise' is the second definition.
(I've seen this before)
(Other definitions for treat that I've seen before include "Practise medicine" , "Pay for - minister to - deal with" , "Nurse" , "Source of gratification" , "Care for - pay the bill" .)