Question the family about the pie filling (7)
I believe the answer is:
pumpkin
'the pie filling' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's an association between them I don't understand?
'question the family' is the wordplay.
'question' becomes 'pump' (pumping is a kind of questioning).
'the family' becomes 'kin' (synonyms).
'pump'+'kin'='PUMPKIN'
'about' acts as a link.
Can you help me to learn more?
(Other definitions for pumpkin that I've seen before include "Halloween vegetable" , "coach would appear at midnight" , "big, yellow, and round" , "Huge yellowy fruit" , "Large type of gourd" .)