A method for monitoring the safe use of a cooker uses a monitoring device in which set values for safety limits based on temperature and humidity or gas content measurements are set for sounding an alarm or cutting off the electricity or gas supply to the cooker. The temperature and humidity and/or gas content are measured above the cooker. The set safety limit values for the temperature and the humidity and/or gas content and/or their rates of change are set and the presence of the user is monitored on the basis of the use of the cooker and/or by a sensor which detects the presence of a person and/or by direct control feedback given by the user. The monitoring device is taught user-specific safety limit values automatically and intuitively on the basis of the use of the cooker, and are automatically changed or adjusted on the basis of the teaching.