Dried food, veg or apples? It's bananas! (5,4)
I believe the answer is:
split peas
'dried food veg' is the definition.
(peas dried and split in half)
'apples? it's bananas' is the wordplay.
'bananas' indicates anagramming the letters (informal term for mad).
'apples'+'its'='applesits'
'applesits' with letters rearranged gives 'SPLIT PEAS'.
'or' is the link.
(Other definitions for split peas that I've seen before include "What's in the soup" , "Dried vegetables" .)