Move fast, wanting second hot dish (6)
I believe the answer is:
scurry
'move fast' is the definition.
'wanting second hot dish' is the wordplay.
'wanting' is a charade indicator (letters next to each other).
'second' becomes 's' (common abbreviation).
'hot dish' becomes 'curry' (I've seen this before).
's' put next to 'curry' is 'SCURRY'.
(Other definitions for scurry that I've seen before include "short horse race" , "Dash (like a mouse?)" , "Scuttle" , "Move quickly" , "Rush; scramble" .)