Sweet making a nut go crazy! (6)
I believe the answer is:
nougat
'sweet' is the definition.
(nougat is a kind of sweet)
'a nut go crazy' is the wordplay.
'crazy' is an anagram indicator.
'a'+'nut'+'go'='anutgo'
'anutgo' anagrammed gives 'NOUGAT'.
'making' is the link.
(Other definitions for nougat that I've seen before include "Chewy nutty sweet" , "Chewy confection with nuts, cherries" , "Honeyed sweet" , "Sweet made from honey, nuts, sugar, etc" , "'Chewy sweet with nuts, cherries (6)'" .)