Tempting figure's about to eat doughnut pieces (7)
I believe the answer is:
sonatas
'pieces' is the definition.
(pieces of music)
'tempting figure's about to eat doughnut' is the wordplay.
'tempting figure's' becomes 'Satan's' (eg Satan tempted Eve).
'about' says the letters should be written in reverse.
'to eat' indicates putting letters inside.
'doughnut' becomes 'o' (letter resembling a doughnut).
'satans' in reverse letter order is 'snatas'.
'snatas' going around 'o' is 'SONATAS'.
(Other definitions for sonatas that I've seen before include "musical items" , "Instrumental compositions" , "Classical pieces" , "eg Moonlight and Waldstein" , "Piano pieces" .)