Decorated, as a cake (4)
I believe the answer is:
iced
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">decorated as a cake</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 iced that I've seen before include "Decorated with sugary mixture" , "Finished off cake" , "Dispatched" , "despatched to American underworld" , "Decorated with frosting" .)