Sandy needs money to make flavoured cake (11)
I believe the answer is:
gingerbread
'flavoured cake' is the definition.
(flavoured baked good)
'sandy needs money' is the wordplay.
'sandy' becomes 'ginger' (hair colour).
'needs' says to put letters next to each other.
'money' becomes 'bread' (slang term for money).
'ginger'+'bread'='GINGERBREAD'
'to make' is the link.
(Other definitions for gingerbread that I've seen before include "Parkin" , "Cake made with treacle or syrup" , "Cake - for single parents?" , "Biscuit cut into shapes" , "Spiced biscuit shaped like a chap" .)