Heating liquid in a domestic appliance

A heating element (1) for a household appliance (D) has a metallic heating layer (105), at least an area heater (101) for heating the heating layer (105) and at least one between the heating layer (105) and the area heater (101) located flat sensor structure (2) that are mutually electrically insulated, said at least one sensor structure (2) (2a, 2b) has at least two electrically separate planar sensor part structures which are at least partially interlaced, and the respective electrical terminals (4a, 4b). A Flussigkeitsheizeinrichtung (V) for a household appliance (G) has at least on such a heating element, the metallic heating layer is provided as a contact surface to be heated to a liquid. A household cooking appliance (D) has at least one such Flussigkeitsheizeinrichtung. The invention is particularly advantageously applicable to steam cookers, to steam-generating appliances such as household Klei kettle or coffee machines, etc., to washing machines and dishwashers.