Bun holding and thawing

A bun handling system, comprising:

• a plurality of cassettes, each cassette of the plurality comprising:
• opposed side walls, a front wall, an open rear face opposite the front wall, and a floor between the opposed side walls;
• wherein a plurality of lanes are defined within the cassette between the opposed side walls, each of the lanes separated from an adjacent lane of the plurality of lanes by an intermediate wall, and a plurality of slots extend through the floor from the open rear face of the cassette in a direction towards the front wall and each lane of the plurality of lanes includes a slot of the plurality of slots;
• and
• a cover extends between the opposed side walls above the floor, wherein the cover is movable relative to the opposed side walls and the floor, the cover comprising a plurality of ridges extending outward from the cover and each ridge of the plurality of ridges is vertically aligned with a slot of the plurality of slots;
• and
• a bun holding cabinet defining a compartment, the compartment of the bun holding cabinet configured to removably receive each cassette of the plurality of cassettes, the bun holding cabinet comprising:
• a plurality of conveyors arranged within the compartment, each of the conveyors of the plurality of conveyors configured to be receivable within a slot of the plurality of slots;
• wherein the plurality of conveyors extend through the plurality of slots to engage buns in each lane of the cassette, wherein the plurality of conveyors extend out of the open rear face of the cassette and are operable to move buns from each lane of the cassette out of the open rear face of the cassette.