Sweet with hair pulled back (7)
I believe the answer is:
dessert
'sweet' is the definition.
(I know that sweet can be written as dessert)
'with hair pulled back' is the wordplay.
'with' says to put letters next to each other.
'hair' becomes 'tress' (tress is a kind of hair).
'pulled' becomes 'ed' (I can't justify this - if you can you should give a lot more credence to this answer).
'back' says the letters should be written in reverse.
'tress' put next to 'ed' is 'tressed'.
'tressed' back-to-front is 'DESSERT'.
Can you help me to learn more?
(Other definitions for dessert that I've seen before include "tart?" , "Charlotte maybe" , "Fool possibly" , "Fruit and nuts, perhaps" , "Sweet, afters" .)