Cook; criticise (5)
I believe the answer is:
roast
I believe this is a double definition.
'cook' is the first definition.
(roasting is a kind of cooking)
'criticise' is the second definition.
(I've seen this before)
(Other definitions for roast that I've seen before include "Bake" , "& 3 Accompaniment to Yorkshire pudding?" , "Heat strongly - criticise excessively" , "Cook (meat) over a fire" , "Cooked joint" .)