Family member has a look around for cereal (7)
I believe the answer is:
granola
'for cereal' is the definition.
(granola is a kind of cereal)
'family member has a look around' is the wordplay.
'family member' becomes 'gran' (short for grandmother).
'has' is a charade indicator (letters next to each other).
'look' becomes 'lo' (archaic exclamation meaning 'look!').
'around' says the letters should be written in reverse.
'a'+'lo'='alo'
'alo' written backwards gives 'ola'.
'gran'+'ola'='GRANOLA'
(Other definitions for granola that I've seen before include "type of cereal" , "US breakfast cereal" , "breakfast dish" .)