Provide an oven and optional cooking accessories having a high emissivity thermal protective layer on a substrate surface which comprises a metal or ceramic. The layer comprises from about 5% to 30% of an inorganic adhesive, from about 45% to 92% of at least one filler, and from about 1% to 25% of one or more emissivity agents; or from about 5% to 35% of colloidal silica, colloidal alumina, or combinations thereof, from about 23% to 79% of at least one filler, and from about 1% to 25% of one or more emissivity agents.