Order a final course (5,3)
I believe the answer is:
apple pie
'order' is the definition.
(I have seen 'such order' mean 'apple pie' so perhaps 'order' could also mean 'apple pie')
'a final course' is the wordplay.
I cannot quite understand how this works, but
'a' is found in the answer.
'course' could be 'e' and 'e' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for apple pie that I've seen before include "... typically American" , "(Characteristically American) sweet" , "Dessert - kind of bed or order" , "Perfect order - bed jokily made" , "in a virtuous form?" .)