Abstract: Electric heating elements are provided on thermal insulation at the bottom of a housing. A flat pan type water container has a bottom resting on the electric heating elements and a top in spaced parallel relation with the bottom and has perforations formed through the top for releasing steam produced by heating water in the container. A plurality of U-shaped support members are removably mounted in the housing in spaced parallel relation extending perpendicularly from the bottom of the housing and extending beyond the housing. Each of the support members has pan supporting devices for supporting a plurality of baking pans within the support members in spaced parallel relation with the bottom of the housing. A cover of transparent material is provided over the support members.