An automatic bread making machine having a baking chamber and a container for receiving bread making ingredients is provided with a backing rack assembly that is selectively placed into and removed from the baking chamber. The baking rack assembly is provided with a frame and a plurality of trays coupled to the frame, in vertically spaced relation to each other. Each of the frames provides a substantially horizontal support surface for a quantity of dough that can be proofed or baked on the tray when the rack assembly is positioned within the baking chamber. A user may therefore bake a plurality of portions of dough within a unitary chamber of an automatic bread making machine.