Sandy has money on island for a biscuit (11,3)
I believe the answer is:
gingerbread man
'biscuit' is the definition.
(gingerbread man is a kind of biscuit)
'sandy has money on island for a' is the wordplay.
I cannot quite understand how this works, but
'money' could be 'bread' (bread is a kind of money) and 'bread' is found in the answer.
'island' could be 'man' (Man is an example) and 'man' is found within the answer.
The remaining letters 'ginger' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for gingerbread man that I've seen before include "Spiced biscuit shaped like a chap" , "Cake in human form" .)