Irresistible mashed, fried too (2,3,3)
I believe the answer is:
to die for
'irresistible' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'mashed fried too' is the wordplay.
'mashed' indicates an anagram.
'fried'+'too'='friedtoo'
'friedtoo' with letters rearranged gives 'TO-DIE-FOR'.
Can you help me to learn more?
(Other definitions for to die for that I've seen before include "Highly desirable or alluring" , "Extremely desirable (colloq.)" , "hot" , "Superb" .)