Nut a boy crushes on a spicy dish (9)
I believe the answer is:
enchilada
'spicy dish' is the definition.
(I've seen this before)
'nut a boy crushes on a' is the wordplay.
'nut' becomes 'en' ('nut' is printers' slang for an en space).
'boy crushes' becomes 'child' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' means one lot of letters goes inside another (as in clothing 'on' a person).
'a' put inside 'child' is 'chilad'.
'en'+'chilad'+'a'='ENCHILADA'
Can you help me to learn more?
(Other definitions for enchilada that I've seen before include "Tortilla and sauce, meat" , "spicy food" , "Mexican food" , "Tortilla with meat and chilli" , "Filled tortilla served with chilli sauce" .)