Dish far from well done, something boring (7)
I believe the answer is:
rarebit
'dish' is the definition.
(rarebit is a kind of dish)
'far from well done something boring' is the wordplay.
'far from well done' becomes 'rare' (as in a steak).
'something boring' becomes 'bit' (I've seen this before).
'rare'+'bit'='RAREBIT'
(Other definitions for rarebit that I've seen before include "on Welsh table?" , "mouthful?" , "Cheese/toast savoury" , "Arbiter of tasty Welsh dish of cheese on toast" , "See 8 Across" .)