Order for eggs is far too simple (4,4)
I believe the answer is:
over easy
'order for eggs is far' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'too simple' is the wordplay.
'too' becomes 'over' (I can't explain this - if you can you should believe this answer much more).
'simple' becomes 'easy' (associated in meaning).
'over'+'easy'='OVER EASY'
Can you help me to learn more?
(Other definitions for over easy that I've seen before include "How an egg may be fried" , "(Of an egg in the US) fried on both sides" , "How eggs may be served" .)