The ornamental design for a breadtoaster accessory, as shown and described.
FIG. 1 is a perspective view of a bread toaster accessory showing the present design;
FIG. 2 is a side view thereof;
FIG. 3 is another side view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is top view thereof;
FIG. 7 is bottom view thereof;
FIG. 8 is a perspective view of the bread toaster accessory shown in an environment of use; and,
FIG. 9 shows the handle of the bread toaster accessory detachably removed from the arm of the bread toaster accessory.
The toaster shown in broken lines in the drawings represents environment that forms no part of the claimed design. The portions of the bread toaster accessory shown in broken lines form no part of the claimed design.