The present invention relates to a transparent cooker designed to enable homogeneous cooking and visibility of its interior during cooking. The cooker of the invention comprises at least one frame forming the main body, at least one fastening piece provided in the gaps in the frame, forming fitting slots thanks to its protrusions, at least one inner glass suitable to be placed in the fitting slots on the side of the internal volume where cooking is performed, at least one outer glass suitable to be placed in the fitting slots on the side of the external volume, at least one empty space interposed between the outer glass and the inner glass with the outer glass and the inner glass placed in the fitting slots so as to be parallel to each other, at least one cable channel enabling the electric cables provided in the frame and connected to the busbars, to be collected in a single corner and to be extended to the exterior, and at least one door capable of opening and closing, formed by joining at least one frame, an outer glass and an inner glass.