Heating element accessory having warning device

Heating element accessories such as a drip pan bowl or a metal ring surround a heating element and contain a heat warning symbol from thermochromic ink or epoxy sprayed or otherwise applied directly to the hot surfaces thereof. For cooking appliances, such as electric and gas stoves, griddles, grills or their accessories. The heat warning symbol is distanced from the heating element or its hottest portions so that the composition can withstand the high temperature on the surface. In a preferred embodiment the device is invisible when below the triggering temperature and visible thereafter. Besides improved cooking appliances, persons can in certain embodiments update their existing appliances by installing accessories with the heat warning symbol and avoid replacing entire heating elements.