Bread and fruit cake (8)
I believe the answer is:
doughnut
'cake' is the definition.
(doughnut is a kind of cake)
'bread and fruit' is the wordplay.
'bread' becomes 'dough' ('dough' can be a synonym of 'bread').
'and' means one lot of letters go next to another.
'fruit' becomes 'nut' (nut is a kind of fruit**).
'dough'+'nut'='DOUGHNUT'
(Other definitions for doughnut that I've seen before include "Small fried cake with hole in middle" , "Sweet cookie" , "Small circular cake" , "Toroid" , "Jam-filled bun" .)