Question: are corningware glass lids oven safe?
Answer: Glass lids can be used as a cover for your CorningWare® SimplyLite™ bakeware in a preheated oven. Glass lids can also be used in a microwave oven, refrigerator, or freezer. Plastic lids can be used in a microwave oven, refrigerator, or freezer; plastic lids are not oven-safe.