Sweet courses prepared (7)
I believe the answer is:
sucrose
'sweet' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'courses prepared' is the wordplay.
'prepared' indicates anagramming the letters.
'courses' with letters rearranged gives 'SUCROSE'.
Can you help me to learn more?
(Other definitions for sucrose that I've seen before include "Sugar's required" , "Basis of cane sugar" , "Sweet compound" , "Sweetening agent -- Croesus (anag)" , "Something in nectar" .)