One eating contents of pie with very little fruit (9)
I believe the answer is:
persimmon
'fruit' is the definition.
(persimmon is a kind of fruit)
'one eating contents of pie with very little' is the wordplay.
'one' becomes 'person' (I can't explain this - if you can you should believe this answer much more).
'eating' is an insertion indicator.
'contents of' says to take the centre (I've seen 'content of' mean this).
'with' is a charade indicator (letters next to each other).
'very little' becomes 'mm' (abbreviation for millimetre).
The middle of 'pie' is 'i'.
'i'+'mm'='imm'
'person' placed around 'imm' is 'PERSIMMON'.
(Other definitions for persimmon that I've seen before include "Edible fruit" , "Orange fruit resembling a plum - miner's mop (anag)" , "Tropical fruit" .)