Prepare to eat meal cooked without imaginative content? (9)
I believe the answer is:
dreamless
'without imaginative content?' is the definition.
(not having any dreams)
'prepare to eat meal cooked' is the wordplay.
'prepare' becomes 'dress' (dressing is a kind of preparing).
'to eat' indicates putting letters inside.
'cooked' indicates an anagram (letters cooked into a new form).
'meal' anagrammed gives 'amle'.
'dress' placed around 'amle' is 'DREAMLESS'.
(Other definitions for dreamless that I've seen before include "So deep in sleep" , "such sound sleep?" , "Lacking aspiration" , "Lacking any vision" .)