A thermoplastic container closure having a base with an open central area and a peripheral skirt depending from its outer edge for fitting about and attachment to the upper end of a container has an upstanding annular wall about the open center which supports a raised platform thereon which forms a first planar surface parallel to the base, with the platform having apertures therethrough and a shoulder at one end, and a closure flap hingedly attached to the shoulder, the flap having projections matable with the apertures in the platform such that when the flap is closed, the closure flap and shoulder form a second planar surface substantially parallel to both the platform and the base.