Yes, you can put Corningware in the oven without the lid. Corningware is designed to be oven-safe and is suitable for use at high temperatures. The base material used in Corningware, known as Pyroceram, can withstand the heat of conventional ovens without the risk of cracking or shattering.
However, it's important to note that not all lids of Corningware products are oven-safe. Some lids may have components like plastic knobs or vents that are not meant to be exposed to high temperatures. In such cases, you should always remove the lid before placing the Corningware in the oven to avoid any potential damage.
Before using Corningware in the oven, it's a good idea to check the specific product's guidelines and instructions provided by the manufacturer. These guidelines will specify the maximum oven temperature the Corningware can handle and any other usage recommendations to ensure safe cooking and avoid damage to the cookware.