Food over at breakfast? (7)
I believe the answer is:
oatmeal
'food' is the definition.
(oatmeal is a kind of food)
'over at breakfast?' is the wordplay.
'over' becomes 'o' (cricket abbreviation).
'breakfast?' becomes 'meal' (breakfast is a kind of meal).
'o'+'at'+'meal'='OATMEAL'
(Other definitions for oatmeal that I've seen before include "Ground grain; colour" , "It's boiled for porridge" , "Eat loam (anag)" , "Pale variegated brown colour" , "Ground grain used to make porridge" .)