The Glasbake J2600 Vtg. This 1-1/2 Qt bowl is made of glass, with a ceramic surface coating, and is oven-safe, microwave-safe, and easy to clean. The round shape and single hole make it perfect for baking and serving dishes in style. The round shape and single hole make it perfect for baking and serving dishes in style. This original Glasbake model adds a touch of retro flair to any kitchen or dining room.