Spare man ordered this to go on pasta perhaps (8)
I believe the answer is:
parmesan
'this to go on pasta perhaps' is the definition.
(parmesan cheese may be added to pasta)
'spare man ordered' is the wordplay.
'ordered' is an anagram indicator.
'spare'+'man'='spareman'
'spareman' with letters rearranged gives 'PARMESAN'.
(Other definitions for parmesan that I've seen before include "Hard dry Italian cheese" , "Hard dry cheese, often grated" , "that grates" , "Spearman (anag) - cheese" , "that's grated" .)