Bang on about recipes (7)
I believe the answer is:
precise
'bang on' is the definition.
'about recipes' is the wordplay.
'about' is an anagram indicator.
'recipes' anagrammed gives 'PRECISE'.
(Other definitions for precise that I've seen before include "with accuracy" , "Detailed, exact" , "Highly accurate and sharply exact" , "Recipes (anag.)" , "Exact like recipes" .)