Abstract: An improved fire extinguishing system for residential and commercial cook stoves and ranges includes one or more heat and/or smoke sensors connected to a control circuit. A cut-off switch activated by the heat and/or smoke sensors is provided to interrupt the flow of gas or electric power to the cook stove burners. The burners are in fluid communication with a source of a fire suppressant. Upon sensing a fire on the cook stove, fluid communication is established between the burners and fire suppressant for rapidly cooling the burners and extinguishing the fire.