The subject invention provides systems and methods for customizing the arrangement of a food tray. The system includes a demonstration unit having a boundary defining a desired shape for a food tray, and components representing a segment of a food tray. Each of the components may be adapted to be arrangeable within the boundary with a subset of the plurality of components as desired to form a food tray arrangement. The system further includes a modular mold adapted to receive a sub-mold inserts in configurable arrangements, and the sub-mold inserts. Each sub-mold insert may correspond to one of the selection of components, and may be adapted to be positioned within the modular mold in a plurality of arrangements. The method includes providing a demonstration unit having a boundary that defines a desired shape for a food tray, and providing components each representing a segment of a food tray.