A cooktop appliance includes a gas burner for receiving a cooking utensil and a fuel regulating device for regulating a flow of fuel to the gas burner. A controller receives a command to start a closed loop cooking process and confirms the cooking utensil by obtaining a first utensil identifier from the user and a second utensil identifier from the cooking utensil. If the first utensil identifier and the second utensil identifier match, the cooking process may commence. By contrast, if the first utensil identifier and the second utensil identifier do not match, the controller may stop the cooking process and notify the user.