A cooler insert comprising a hexahedrical container having an exterior surface and a hollow interior forming a fluid-tight reservoir containing a refrigerant material. The hexahedrical container includes a plurality of deep beverage receptacles on the top side of its exterior surface and a plurality of shallow beverage receptacles on the bottom side of its exterior surface. The design and configuration of the beverage receptacles enables a single cooler insert to be used alone or multiple cooler inserts to be used in a stacked configuration.