Mortified chefs made a mess (10)
I believe the answer is:
shamefaced
'mortified' is the definition.
(thesaurus)
'chefs made a mess' is the wordplay.
'mess' is an anagram indicator.
'chefs'+'made'+'a'='chefsmadea'
'chefsmadea' with letters rearranged gives 'SHAMEFACED'.
(Other definitions for shamefaced that I've seen before include "Red" , "Looking humiliated" , "Embarrassed" , "Hangdog" , "Abashed" .)