Cheese dish (7)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cheese dish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rarebit that I've seen before include "cheesy meal" , "Toasted cheese and bread" , "Arbiter (anag) -- snack" , "Cheese on toast - arbiter (anag)" , "Arbiter of Welsh dish with melted cheese on toast" .)