Cream-filled pastry (6)
I believe the answer is:
eclair
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cream-filled pastry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for eclair that I've seen before include "I clear off with thin chocolate cake" , "Comedienne" , "teatime treat?" , "Dainty" , "A long choux cake" .)