Can You Put Corningware In The Microwave: Is It Safe?

Microwaving your meals in a microwave oven is a quick and convenient method of reheating or cooking food. Here’s the scoop on can you put corningware in the microwave!

When choosing cookware to use in the microwave or toaster oven, it’s a good idea to select pieces that are safe and resistant to high temperatures. 

Some materials such as parchment paper glass-ceramic ware, and specific things like casserole dishes can be used in a microwave, as the manufacturer’s instructions state they are safe to use in a microwave. 

Plastic lids and glass covers are also safe to use. 

However, metal material, such as the metal in the metal pans in your kitchen or aluminum foil, can be subject to temperature extremes, causing hot spots or general high heat resistance. 

This means that most metal containers have specific uses that don’t involve a microwave. 

CorningWare, a popular brand of cookware known for its `durability and versatility, is a common choice for many households when it comes to microwaving, and for good reason. 

These vintage dishes are made of Pyrex, similar to porcelain, according to the Corningware website; however, they typically fall under glass ceramics. 

These vintage products can withstand the heat source from a gas stovetop as well as the direct flames. Which also makes them safe for a conventional oven and general oven use. 

Can You Put Corningware in The Microwave

woman putting bowl into the microwave

But can you safely put CorningWare cookware in the microwave? Can the old style of Corningware containers withstand microwaves? 

The short answer is yes – CorningWare dishes are microwave-safe. Though it’s best to understand the products to avoid personal injury and achieve the best results. 

The good news is that the original Pyroceram in the porcelain versions of these products helps provide a barrier against heat. 

They can withstand temperatures up to 450 Kelvin or 850 °F without cracking or showing any signs of deformation. 

This is due to the unique material called Pyroceram, which is used in the manufacturing of Corningware products. 

Corningware glass lids from the Corningware company can also withstand high temperatures. 

This heat-resistant material allows only Corning Ware to be safely used in microwaves without causing any damage to the dish or the appliance.

This also applies to Corningware lids, Corningware bakeware, and Corningware stoneware, as ceramic stoneware can also handle microwaves. 

No matter what type of food you microwave, know that the base material of Corningware is microwave-safe. 

However, as you use Corningware in the microwave, remember to always check for the “microwave safe” symbol on the bottom of the dish or consult your product’s manual to ensure that your specific dish is appropriate for microwave use. 

Using the right cookware is essential for safe and efficient microwave cooking, and Corningware’s reliable performance makes it a perfect choice. 

Can You Put Corningware in the Microwave

plate in the microwave with food on it

Microwave Safe Materials

There are specific materials that are considered safe for use in the microwave. 

These materials include glass, ceramic, and some types of plastic, which includes the Pyrex lid of your old Corningware. 

It’s essential to ensure that any container or cookware used in a microwave is labeled as microwave-safe to prevent damage to the microwave or the container itself during your cooking process. 

The maximum temperature of your microwave might have an effect on its sculptured rim, for instance. 

Additionally, when handling these products in a microwave, take precautionary measures for yourself and use pot holders for safety. 

If possible, put your foot on lower heat, or lower temperatures that are still safe for recommended cooking times. 

  • Glass: Glass containers are among the safest options for microwave use as they don’t react to microwaves and can withstand high temperatures.
  • Ceramics: Ceramic dishes, like Corningware, can be used in the microwave because they’re made from heat-resistant materials that can handle varying temperature changes, even extreme cold, without breaking or becoming soft.
  • Plastic: Only use plastics labeled as microwave-safe in the microwave, as some may release harmful chemicals or melt under high temperatures. The best way to determine this is by checking the label. 

Similarly, Corelle brands are also microwave-safe.

Corelle dishes fall under the same Corningware company, but Corelle plates and other products require similar instructions. 

Corningware and Microwave Compatibility

bowl with lemon in microwave

Corningware is a popular brand of ceramic cookware that has been on the market for decades.

Their products are known for their heat resistance and durability, making them suitable for various cooking methods like Dutch ovens, broiler use, and a typical stove top. This includes microwaving.

Most Corningware products are microwave-safe, as they are made of Pyroceram, a material that can withstand temperatures up to 450 Kelvin or 850°F without cracking or showing signs of deformation.

You can place these products at the bottom of the oven and cook at a Corningware oven-safe temperature without worrying about damage. 

However, it’s important to note that a few specific Corningware lines should not be microwaved, even if you have a vintage Corning ware microwave. 

To ensure the safety and compatibility of your Corningware products, always check the labels and instructions provided.

You can safely use most Corningware products in the microwave without damaging the Corningware patterns or the microwave itself. 

Remember to check the labels and adhere to the manufacturer’s guidelines to ensure safe and efficient cooking.

Types of Corningware and Their Safety


Pyroceram is a type of glass-ceramic material that was originally developed by Corningware. 

This material is known for its excellent thermal resistance and ability to withstand sudden temperature changes. Making it safe for use in the microwave.

Pyroceram cookware can tolerate temperature fluctuations without cracking or breaking. Making them a reliable option for cooking and heating your food.

French White

The French White range of Corningware products is a popular choice among home cooks. It can be safely used in the microwave. 

These microwave-safe pieces are made from ceramic material and are resistant to temperature fluctuations, ensuring that they won’t crack or break during use. 

Just be certain to avoid metal parts on the container when using it in the microwave. As metal is not microwave-safe.


bowl with rice in it being put into microwave

Ceramic CorningWare is another type that can be safely used in microwaves. 

These products are designed to be versatile and can also be used in conventional and convection ovens. 

However, always follow the manufacturer’s guidelines for proper usage and do not overheat or heat empty ceramic cookware in the microwave to ensure its longevity and safety.

Vintage Corningware

Vintage Corningware refers to the older models of cookware that were made from a different material compared to the modern versions. 

The only thing is that the vintage pieces may have been made with materials such as Pyroceram, it’s important to be cautious when using them in a microwave as they may not have the same temperature resistance as newer Corningware products. 

To ensure safety, always double-check whether your vintage Corningware piece is microwave-safe before using it to heat your food.

Safety Tips for Using Corningware in the Microwave

microwave sitting on counter

Corningware is a durable and versatile cookware option known for its ability to withstand high temperatures and resist thermal shock. 

However, it’s essential to follow certain safety tips while using it in the microwave to prevent damage and ensure user safety. 

We’ve got the scoop on thermal shock, preventing shattering, and using appropriate utensils.

Thermal Shock

Like any cookware, Corningware may be susceptible to thermal shock, a phenomenon occurring when materials experience sudden temperature changes.

Glass-ceramic cookware like Corningware is generally resistant to thermal shock. Making it suitable for transitioning from the refrigerator or freezer to the microwave or oven. 

However, vintage Corningware microwave may not be designed for such rapid temperature fluctuations, and exercising caution is necessary.

To minimize the risk of thermal shock, avoid placing Corningware that has been in the refrigerator or freezer directly into a preheated oven or microwave.

Instead, let it come to room temperature before microwaving. 

Additionally, be cautious when using Corningware on both the stovetop and in the microwave. As some older products may have metallic features, making them unsafe for microwave use. 

Check for a microwave-safe logo on the bottom of your dish before microwaving.

How to Prevent Shattering

Shattering can occur if Corningware is subjected to sudden temperature changes, excessive heat, or physical impact. 

To prevent shattering:

  • Do not expose the cookware to extreme temperature changes (hot to cold or vice versa)
  • Use oven mitts when handling hot Corningware to prevent accidents
  • Ensure your microwave is set at a safe temperature and avoid overheating the dish
  • Avoid placing Corningware on a wet surface after microwaving, as this can cause the dish to fracture

Using Appropriate Utensils

When microwaving Corningware, it is crucial to use the right utensils to stir, mix, or remove food from the dishes. 

Using metal utensils or gold products can damage the cookware or cause it to shatter. 

Instead, use non-toxic and microwave-safe plastic, silicone, or wooden utensils when handling your food in the microwave.

These products might also have stoneware handles, meaning use of its stoneware is safe for preparing the food as well. 

Moreover, exercise caution when using microwave-safe wrapping or special browning wrappers, as some may contain chemicals such as phthalates or styrene that can release toxic fumes when heated. 

Ensure that the wrapping you use is labeled as microwave-safe and free of harmful chemicals.

By following these safety tips and being mindful of potential risks, you can safely use Corningware in a microwave without damaging the cookware or compromising your health.

​Now that you know how Corning glass works, break out your Corningware Go and start preparing your dishes!

Final Thoughts

When it comes to using CorningWare in the microwave, it is important to consider the specific product and its intended use.

CorningWare, manufactured by World Kitchen, has a long-standing reputation for its quality stoneware that is versatile and durable.

Vintage CorningWare, often recognized by its signature blue flowers patterns, is generally safe for microwave use.

However, it is essential to check for any specific guidelines or warnings from the manufacturer. Especially if you have an older model.

It’s important to note that newer CorningWare products may feature different materials or coatings that may not be microwave-safe.

When in doubt, refer to the product’s packaging or consult the manufacturer’s instructions.

By following these guidelines, you can safely and confidently use your CorningWare for microwave corningware cooking, reheating, and serving, making it a convenient and reliable choice in your kitchen.

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