Nosh very good, feeding me pastry dish
I believe the answer is:
meat pie
'pastry dish' is the definition.
(I've seen this before)
'nosh very good feeding me' is the wordplay.
'nosh very' becomes 'eat' (I can't justify this - if you can you should give a lot more credence to this answer).
'good' becomes 'pi' (I've seen this in other clues).
'feeding' means one lot of letters goes inside another.
'eat'+'pi'='eatpi'
'eatpi' put within 'me' is 'MEAT-PIE'.
Can you help me to learn more?
(Other definitions for meat pie that I've seen before include "Snack" , "Ape time (anag.)" , "fare" , "Pastry covered dish containing pork, beef etc" .)