Pyrex glassware is a staple in many kitchens. Its versatility and durability make it an ideal choice for baking, cooking, storage, and more.
A common question many Pyrex users have is whether it’s safe to go from fridge to oven with their dishes. Let’s explore this topic in depth.
What is Pyrex?
Pyrex is a brand name for glassware made from tempered soda-lime glass.
It was originally created by Corning Glass Works in 1915 and was designed to have high resistance to thermal shock. This makes Pyrex ideal for both hot and cold applications.
Pyrex glass expands when heated and contracts when cooled. So it can withstand the temperature changes of going from freezer to oven without cracking or shattering.
This thermal resistance property is what has made Pyrex a staple for cooks and bakers for over a century.
Is every Pyrex Oven Safe?
While all Pyrex is thermal shock-resistant, not all items are intended for oven use. Here are some tips on identifying oven-safe Pyrex:
- Glass bakeware: any glass baking dishes, pie plates, loaf pans, etc. are oven-safe.
- Clear glass with colored Pyrex lettering: Vintage Pyrex (produced before 1998) with clear glass and blue, red, or green lettering is oven safe.
- Check the product descriptions. If you’re uncertain, check the product description for the maximum oven temperature or any warnings.
- Avoid glass lids. Glass lids and clear mixing bowls may be marked Pyrex but are not meant for baking.
So inspect your Pyrex carefully and know the limits before putting it in the oven. Using glassware not intended for thermal changes can lead to cracking or shattering.
Is it Safe to Go From Fridge to Oven?
Yes, you can safely go from fridge to oven with Pyrex glassware made for baking purposes. The thermal shock resistance allows Pyrex to withstand temperature changes from freezer to oven without breaking.
However, there are some best practices to follow:
- Allow the dish to adjust to room temperature. Don’t take a cold Pyrex dish straight from the fridge and put it in a hot oven. Let it gradually adjust to room temperature first.
- Preheat the oven fully. Make sure the oven is at the desired temperature before putting in the Pyrex. No sudden temperature changes
- Cool before refrigerating: Allow baked dishes to cool down before putting them in the fridge.
- Inspect for damage. Check for chips, cracks, or signs of wear. Damaged dishes may become prone to breaking.
- Don’t add cold liquids. Don’t add cold liquid ingredients to hot Pyrex, or vice versa. Gradual temperature changes only
With proper care, Pyrex can safely go back and forth from the fridge to the oven many times. Just be cautious of extreme temperature shifts.
What About Freezer-to-Oven?
It’s not recommended to go directly from the freezer to the oven with Pyrex. The extreme temperature change from frozen to hot ovens can be too much and may lead to cracking or shattering, even with Pyrex. Here are some tips if you need to use frozen Pyrex in the oven:
- Defrost in the fridge first. Allow the frozen dish to thaw overnight in the fridge before baking.
- Defrost at room temperature. If time allows, defrost on the counter for 1-2 hours before baking.
- Start the oven at a lower temperature. Place the frozen dish in a cold oven, then turn the oven to the final temperature. This allows gradual warming.
- Keep time short: When cooking frozen foods in Pyrex, keep cooking time to under an hour.
- Use a baking sheet: Place Pyrex on a metal baking sheet to allow a more gradual temperature change.
With extra care, Pyrex can safely go from freezer to oven. But it runs a higher risk of thermal shock. Use extreme care and consider defrosting first when possible.
Why is Pyrex Ideal for Oven Baking?
There are a few properties that make Pyrex an ideal choice for oven baking:
- Temperature resistance: can withstand temperatures from -40 to 500°F. Great for both the fridge and oven.
- Thermal shock resistance: glass won’t crack from sudden temperature changes.
- Non-porous surface: food won’t react with the glass, so flavors stay true.
- Clear glass allows you to monitor baking progress visually.
- Even heating: glass heats evenly and won’t develop hot spots.
- Various shapes are Available in different pans, dishes, and bakeware.
- It doubles as a serving dish; it Looks nice enough to go straight from the oven to the table.
Pyrex is designed to be versatile, durable, and perform beautifully during baking. Its qualities that made it a baking staple continue today.
Proper Care for Pyrex Ovenware
To enjoy your Pyrex for many years, abide by these care guidelines:
- Hand wash only; do not put Pyrex in the dishwasher. Wash gently by hand.
- Avoid temperature extremes. Don’t go straight from very hot to very cold water when washing.
- No metal utensils; use soft plastic, silicone, or wood utensils to avoid scratches.
- Check for damage. Inspect for chips, cracks, or deep scratches regularly. Discard damaged items.
- Don’t cook on the stovetop. Pyrex ovenware is not meant to be used on the stovetop or under broilers.
- Store properly: keep lids loosely placed, don’t stack items, and avoid dropping.
With proper care, Pyrex bakeware can last for many years and many trips from fridge to oven. Be gentle, inspect for damage, and avoid sudden temperature extremes.
Frequently Asked Questions
Can any glass dish go from the fridge to the oven?
No, only glassware designed for oven use, like Pyrex, has the proper thermal shock resistance to go from fridge to oven safely. Everyday glass is prone to cracking and shattering at extreme temperatures.
How long does Pyrex last?
With proper care, Pyrex glassware can last for many years. Vintage Pyrex from decades ago is still in circulation today.
Is it OK to put hot Pyrex on a cold surface?
It’s best to place hot Pyrex on a hot pad or dry towel rather than directly on a cold surface. Allow it to adjust to room temperature before refrigerating.
Can Pyrex go under the broiler?
No, Pyrex ovenware is not designed to be used under the direct heat of a broiler. It could cause cracking or shattering.
Can Pyrex go in a convection oven?
Yes, Pyrex ovenware is safe to use in a convection oven as it resists high temperatures. Just ensure not to exceed the maximum recommended temperature.
Is it safe to use scratched or chipped Pyrex?
No, Pyrex with any chips, deep scratches, or cracks should be discarded immediately. Damage weakens the glass and makes it unsafe for oven use.
What should you not do with Pyrex?
Avoid putting Pyrex on the stovetop, under the broiler, from freezer to oven, in the microwave, or exposing it to sudden temperature extremes. Follow all manufacturer’s instructions.
Does Pyrex break easily?
Pyrex is a thermally shock-resistant glass engineered not to break easily. However, any glass material can break with improper handling. Avoid drops, bangs, scratches, and extreme heat or cold.
In summary, Pyrex’s unique thermal properties make it ideal for moving from fridge to oven.
But always use proper care: allow dishes to adjust to room temperature before heating, preheat the oven fully, and never put cold liquids into hot glasses or vice versa.
With prudent use, Pyrex can be a cooking staple for generations.
Hi, I’m Julie, the passionate foodie and founder of Juliesfamilykitchen.com. I created this blog out of a drive to prove someone wrong, and then I realized how much I truly enjoy cooking and trying new recipes. In my free time, when I’m not running around after my kids or spending quality time with my partner, you can usually find me in the kitchen experimenting with new dishes.