Futile hope for pastry served in plane (3,2,3,3)
I believe the answer is:
pie in the sky
'in plane' is the definition.
The definition suggests a singular noun which matches the answer.
'futile hope for pastry' is the wordplay.
'futile hope' becomes 'inthesky' (I can't justify this - if you can you should believe this answer much more).
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'pastry' becomes 'pie' (pie is a kind of pastry).
'inthesky' put after 'pie' is 'PIE IN THE SKY'.
'served' is the link.
Can you help me to learn more?
(Other definitions for pie in the sky that I've seen before include "A nice thought unlikely to happen (colloq.)" , "Inkiest hype (anag.)" , "Jam tomorrow" , "An improbable future benefit" , "Illusory prospect of future benefits" .)