Like to feed toddler something for breakfast (5)
I believe the answer is:
toast
'something for breakfast' is the definition.
'like to feed toddler' is the wordplay.
'like' becomes 'as'.
'to feed' indicates putting letters inside.
'toddler' becomes 'tot' ('tot' can be a synonym of 'toddler').
'as' inserted into 'tot' is 'TOAST'.
(Other definitions for toast that I've seen before include "Warm, it may be eaten" , "cooked 13 [BREAD]" , "Health-giving" , "Perhaps all the best" , "Raising of glasses" .)