The most common and most likely answer to this crossword clue is the 10 letter word CHEESECAKE
I've seen this crossword clue in Financial Times
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Buddy explains!

The straight part
We know that "Eye candy/sweet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case eye candy/sweet = cheesecake.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CHEESECAKE mean?
CHEESECAKE noun- A pie made of sweetened and flavoured cottage cheese or cream cheese, eggs and milk on a crunchy base.
- Imagery of one or more scantily clad, sexually attractive young women; pin-ups.