Apricot tart contains soft cheese (7)
I believe the answer is:
ricotta
'soft cheese' is the definition.
(I've seen this before)
'apricot tart contains' is the wordplay.
'contains' indicates a hidden word.
'RICOTTA' is hidden in the letters of 'apricot tart'.
(Other definitions for ricotta that I've seen before include "Read the riot act about the cheese" , "cheese, Italian style" , "Italian 8 across" , "dairy produce" , "Italian curd cheese" .)