Cooks in oven (6)
I believe the answer is:
roasts
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cooks in oven</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for roasts that I've seen before include "Has a go at" , "Cooks in dry heat" , "Cooks meat in oven" , "traditional Sunday food" , "gets very hot" .)