Described as shockingly sturdy bakeware, this set of tempered glass Ovenchef Bakeware is designed to bake casseroles, lasagnas, pies and anything in between to perfection, bubbling with family favorite flavors. The surface is so smooth that it cleans easily, even when food is baked directly in the dish. OVENCHEF is made from reinforced tempered glass resistant to a thermal shock of 200°C temperature differentiation and is able to withstand temperatures between -20°C to 300°C.