It is generally not recommended to microwave glass Pyrex containers with plastic lids, as the lids are not designed to withstand high temperatures. While the glass portion of the Pyrex container is microwave-safe, the plastic lids can warp, melt, or release harmful chemicals when exposed to high heat.
If you need to heat or reheat food in a glass Pyrex container, it's best to remove the plastic lid and cover the dish with a microwave-safe cover, microwave-safe wax paper, or microwave-safe plastic wrap. This allows steam to escape and prevents splattering while heating the food.
Always refer to the specific instructions provided by the manufacturer for the proper usage and safety guidelines for your Pyrex and plastic lids.