Provided is a top plate for a cooking device including a glass sheet (2) and a light-shielding film (3) formed on a lower surface (2c) of the glass sheet (2) through sputtering. The light-shielding film (3) contains an oxide, a nitride, or an oxynitride of a transition metal of Group 6 to Group 11 on the periodic table. In this manner, a color close to grey can be achieved as a color of the light-shielding film (3) while insulating properties of the light-shielding film (3) are secured.