Cooking for Engineers says, “Pyrex glassware is an excellent example of microwave safe, heat resistant glass that can also be baked.”

Can you use a Pyrex dish in a microwave?

Pyrex is absolutely microwave safe with important considerations to follow. Do not use cold Pyrex in a high heat microwave, pour hot liquid into cold Pyrex measuring cup or place a hot Pyrex dish on a cold surface.

Why did my Pyrex dish explode in the microwave?

When a Pyrex bowl is heated or cooled rapidly, different parts of the bowl expand or contract by different amounts, causing stress. If the stress is too extreme, the bowl's structure will fail, causing a spectacular shattering effect.