Cook chicken for ignoramus (7)
I believe the answer is:
heathen
'ignoramus' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'cook chicken' is the wordplay.
'cook' becomes 'heat' (I've seen this before).
'chicken' becomes 'hen' (hen is a kind of chicken).
'heat'+'hen'='HEATHEN'
'for' is the link.
Can you help me to learn more?
(Other definitions for heathen that I've seen before include "One who doesn't acknowledge your god" , "Uncultured" , "Barbaric" , "Infidel, pagan" , "Person lacking culture or moral principles" .)