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I have this delicious dish with gravy I did yesterday, and the rest is still in the pyrex-like oven proof glassware used to cook it.

Can I "cheat" and quickly reheat directly on my vitro ceramic stove top ? That would seem much quicker than reheating it the oven, and would save dish washing compared to transfering the contents into a frying pan.

My core question is specifically about the integrity of the glassware (though I'm aware it should reheat less uniformly than in the oven).

There is a related question that I found, but it is about a bowl that was not especially made for the oven at all, so I guess this question is different.

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I would absolutely not recommend heating Pyrex with any type of direct heat, ever.

That stuff goes off like a hand-grenade, highly dangerous - not to mention messy.

I've seen it happen too many times for it to be even vaguely worth the risk; even when accidentally placed on recently switched-off hobs.

Pyrex is a low-expansion glass. However, low-expansion does not mean zero-expansion, so if the bottom is being heated whilst the top stays cool, the expansion difference is enough to cause it to simply explode all over the kitchen.

Yes to microwave, but a solid no for a hob.
[& I'm talking UK Pyrex, I didn't know US was even worse until I read the Pyrex wikipedia page ChrisH posted]

If you have no microwave, then either oven or transfer it to a pan.
The extra washing up is safer & far less hassle than trying to clean the hob, then find all the really really sharp glass shards that will find every corner of a 20m square room.

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  • Agreed! Bad bad bad idea!
    – GdD
    Commented Nov 3, 2019 at 21:41
  • Very interesting. My mom used to make pop corn in a Flame Resistant Pyrex pan when I was a kid (in europe), and I always thought all Pyrex products were the same... glad I learned this today
    – MicroMachine
    Commented Nov 4, 2019 at 5:44
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    There's "Visions" also by Corning, which is a stove-top 'glass' pan range. The two should never be confused. en.wikipedia.org/wiki/Visions_(cookware)
    – Tetsujin
    Commented Nov 4, 2019 at 8:09
  • I tried using Visions stuff a few years back, I was not impressed. The see through is a novelty that isn't that handy, and the pots aren't really a joy to cook with.
    – GdD
    Commented Nov 4, 2019 at 9:22
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Strangely, it makes a difference where you are. American "pyrex" would be very likely to break, while European "PYREX" would have a good chance if heated gently. However I wouldn't recommend it even then. If you've got a microwave that would do a better job of reheating than the stove top and either sort of Pyrex can generally take microwaving

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  • Indeed a microwave would be an obvious better alternative for reheating, but I don't have one.
    – Pac0
    Commented Nov 3, 2019 at 18:50

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