Glow, good meal being cooked (5)
I believe the answer is:
gleam
'glow' is the definition.
(synonyms)
'good meal being cooked' is the wordplay.
'good' becomes 'g' (abbreviation).
'being cooked' is an anagram indicator.
'meal' anagrammed gives 'leam'.
'g'+'leam'='GLEAM'
(Other definitions for gleam that I've seen before include "Sparkle, glimmer" , "Ray" , "Beam of soft light, comes and goes" , "Brief shining" , "Brief show of soft light" .)