Cooking range popular once more (5)
I believe the answer is:
again
'once more' is the definition.
('again' can be a synonym of 'once more')
'cooking range popular' is the wordplay.
'cooking range' becomes 'aga' (I've seen this before).
'popular' becomes 'in'.
'aga'+'in'='AGAIN'
(Other definitions for again that I've seen before include "Predictably perhaps" , "One more time, encore" , "second term" , "Repeatedly" , "'Another time, once more (5)'" .)