Abstract: A product developed for the purpose of cooking food in a microwave oven. A microwave food-container includes metal particles in a matrix. The composition of the present invention is essentially invisible to microwave radiation but is efficient as a reflector of IR radiation. This promotes higher heat to be generated, which is more evenly applied within a container by reflecting IR energy back toward the food product while allowing microwave radiation to penetrate the container to aid in the cooking process. Such packaging for microwave use allows for efficient, thorough cooking of frozen, raw, and raw-frozen foods.