Old tamale recycled as breakfast food (7)
I believe the answer is:
oatmeal
'breakfast food' is the definition.
(thesaurus)
'old tamale recycled' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'recycled' indicates anagramming the letters.
'tamale' is an anagram of 'atmeal'.
'o'+'atmeal'='OATMEAL'
'as' acts as a link.
(Other definitions for oatmeal that I've seen before include "Porridge constituent" , "Plain food" , "It's boiled for porridge" , "Source of biscuits" , "Breakfast dish" .)