A sink assembly supported by a countertop surface or a freestanding cabinet to form a food preparation station is provided. The sink assembly includes a sink basin, a stanchion, a cutting board supported by the stanchion, and a coupling member fastening the cutting board and stanchion. The stanchion has first and second uprights extending between lower edges that are coextensive with the basin floor and terminating in a platform spanning therebetween. Mounts, such as slotted brackets, releasably secure the stanchion to the basin floor. The coupling member may be first and second pairs of cooperating fasteners associated with the cutting board and platform. The fasteners can be a cooperating tab and slot and a cooperating spring clip and peg. The basin floor may be sloped in multiple directions while the cutting board, when coupled to the stanchion, extends generally parallel to the horizontal plane of the support surface.