Cookie type (7)
I believe the answer is:
oatmeal
'cookie type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oatmeal that I've seen before include "It's boiled for porridge" , "AA Motel (anag.)" , "Plain food" , "Ground grain; colour" , "Ground grain used to make porridge" .)