The present invention generally relates to a cooking oven, which is provided with a cooking cavity and a door adapted to close the cooking cavity. The door is provided with an outer frame and one or more glass panes supported by such frame along the periphery thereof. On the surface of at least one of the glass panes there are applied heating means, which include a layer of substantially clear, e.g. transparent resistive material, and means adapted to connect two sides of such layer of resistive material to appropriate terminals energizable by an electric voltage supplied from a source available inside the oven.