Very good soup I cooked (5)
I believe the answer is:
pious
'very good' is the definition.
(pious can mean very religious)
'soup i cooked' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'soup'+'i'='soupi'
'soupi' anagrammed gives 'PIOUS'.
(Other definitions for pious that I've seen before include "Good" , "Devout" , "Sanctimonious" , "God-fearing" , "Saintly" .)