Roly-poly pudding for starters topped with fruit (5)
I believe the answer is:
plump
'roly-poly' is the definition.
(I've seen this in another clue)
'pudding for starters topped with fruit' is the wordplay.
'for starters' indicates taking the first letters.
'topped with' is a charade indicator (letters next to each other).
'fruit' becomes 'plum' (plum is a kind of fruit).
The initial letter of 'pudding' is 'p'.
'p' put after 'plum' is 'PLUMP'.
(Other definitions for plump that I've seen before include "Opt - round" , "Tubby; opt (for)" , "Chubby, round" , "Choose; chubby" , "Corpulent" .)