Placing cookware that are not oven-safe into an oven can result not only in damage to the pans but to the oven.
Even more importantly, exposing pans to high temperatures when they are not approved for such use is a fire hazard.
For these reasons, it is essential to check your cookware to see if they are oven-safe before using them.
Look at the bottom of cookware for a mark noting the pan is oven-safe or some notice on the packing.
Check the cookware for any plastic or bakelite, such as in the handle, that could melt when placed in an oven.
Identify the material the pan is made of Glass, ceramic, aluminum, cast iron and stainless steel are all oven-safe materials.
Enamel is oven safe but should not be heated beyond 350 degrees.
Check for a non-stick surface, such as a Teflon coating. These coatings can not aford high temperatures.
if cookware with non stick coating treatment should not be heated beyond 280 degrees.