A method for producing and, if required, processing a metal plate which is formed of plate bodies and provided or retrofittable with at least one embedded temperature sensor, comprising the following steps: a) arranging at least one metallic protective tube which is the sheath of a sheathed thermocouple or a conduit into which a temperature sensor, preferably a sheathed thermocouple, is insertable after the production and, if required, processing of the metal plate between a first and a second plate body (11, 12) which are not provided with recesses for accommodating the or each protective tube and which are made of aluminium and/or an aluminium alloy, respectively, b) embedding the or each protective tube, in direct contact, in the first and the second plate body (11, 12) by compression and material displacement of the first and the second plate body (11, 12) by rolling, and thereby c) connecting the entire surfaces of the plate bodies (11, 12), wherein the plate bodies (11, 12) are thermally pre-treated at a temperature which is higher than the recrystallisation temperature of aluminium or the aluminium alloy but lower than the melting point of aluminium and then pressed against each other by the rolling to accomplish the embedment of the or each protective tube in the plate bodies (11, 12), wherein the plate bodies (11, 12) undergo mutual diffusion bonding in the area of their sides contacting each other, whereby the plate bodies (11, 12) are materially connected to each other and to the or each protective tube across the entire surface area to form the metal plate to be produced; characterised in that the metal plate is reshaped into a cooking or frying vessel (22, 22') including a base and a wall extending upwards therefrom with a radius by thermoforming after rolling and in that then one end of the sheath or the conduit is exposed on the outer side of the wall for an electrical connection of the temperature sensor. a) arranging at least one metallic protective tube which is the sheath of a sheathed thermocouple or a conduit into which a temperature sensor, preferably a sheathed thermocouple, is insertable after the production and, if required, processing of the metal plate between a first and a second plate body (11, 12) which are not provided with recesses for accommodating the or each protective tube and which are made of aluminium and/or an aluminium alloy, respectively, b) embedding the or each protective tube, in direct contact, in the first and the second plate body (11, 12) by compression and material displacement of the first and the second plate body (11, 12) by rolling, and thereby c) connecting the entire surfaces of the plate bodies (11, 12), wherein the plate bodies (11, 12) are thermally pre-treated at a temperature which is higher than the recrystallisation temperature of aluminium or the aluminium alloy but lower than the melting point of aluminium and then pressed against each other by the rolling to accomplish the embedment of the or each protective tube in the plate bodies (11, 12), wherein the plate bodies (11, 12) undergo mutual diffusion bonding in the area of their sides contacting each other, whereby the plate bodies (11, 12) are materially connected to each other and to the or each protective tube across the entire surface area to form the metal plate to be produced;