Modular mold unit and space-saving modular mold assembly, method, and article of manufacture for forming and preparing frozen confections that allow a quick release of the frozen confections from the mold by a microwave oven, wherein the mold unit is made of plasticizer-free, unadulterated, nonrecycled, heat-stable, microwave-transmissible plastic. The modular mold unit comprises a container member and a detachable lid member, wherein said container member comprises attachment means comprising lock-and-key mating or coupling connector members that are used to firmly and removably connect a plurality of modular mold units to one another to form an assembly of mold units, and wherein said detachable lid member has a stick member that is integrally molded with said lid member. Alternatively, said removable lid member is a stick-supporting lid having a central collar with a longitudinal slot opening to frictionally hold a separate wooden or plastic stick.
