More dough that's flatter, but not soft (5)
I believe the answer is:
raise
'more dough' is the definition.
(more money for a job - dough can mean money)
'flatter but not soft' is the wordplay.
'flatter' becomes 'praise' (I've seen this before).
'but not' is a deletion indicator.
'soft' becomes 'p' (musical abbreviation for piano, 'soft').
'praise' with 'p' taken away is 'RAISE'.
'that's' acts as a link.
(Other definitions for raise that I've seen before include "Lift; (to) levy (money)" , "Hoist" , "Pick up" , "Exalt" , "Lift up or rear" .)