Like some cookie sheets (7)
I believe the answer is:
greased
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">like some cookie sheets</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for greased that I've seen before include "well lubricated" , "Facilitated" , "Oiled" , "well buttered" , "As palms may be" .)