I am a corn producer producing pasta (8)
I believe the answer is:
macaroni
'pasta' is the definition.
(macaroni is a kind of pasta)
'i am a corn producer' is the wordplay.
'producer' indicates an anagram.
'i'+'am'+'a'+'corn'='iamacorn'
'iamacorn' with letters rearranged gives 'MACARONI'.
'producing' acts as a link.
(Other definitions for macaroni that I've seen before include "Pasta variety, eighteenth century dandy" , "Hollow pasta" , "being a feather in Yankee's cap?" , "With which one tube-feeds" , "Italian fare" .)