Exploring the Safety of Broiling with Pyrex: Can You Do It?

Can you bake Pyrex?

Pyrex is a renowned brand known for making durable cookware that can be used in a variety of ways. However, when it comes to broiling food, Pyrex should not be used. This article explores the reasons why Pyrex is not suitable for broiling and provides alternative materials that are better suited for this cooking technique.

Understanding Pyrex

Pyrex is a well-established brand that has been around for decades. It is known for producing high quality glassware that is known for its durability. Pyrex uses borosilicate glass, a type of glass that is strengthened to minimize thermal expansion and stress. The company also uses advanced manufacturing processes to improve the build quality of its glassware.
While Pyrex products are known for their durability and ability to withstand a wide range of temperatures, they have limitations when it comes to grilling. Glass, though toughened and reinforced, cannot defy the laws of thermal dynamics. Glass has inherent flaws that make it less suitable for extremely high temperatures.

The fragility of glass

When glass is exposed to heat, it expands in various areas, albeit in tiny amounts that may not be visible to the naked eye. These minute changes can cause microscopic fractures in the glass, which can eventually cause the glass to shatter. Glassware may appear intact during the heating process, but as soon as it is removed from the oven and placed on a countertop, it can shatter instantly due to the mechanical stress caused by the change in temperature.
Pyrex glassware products are typically designed to work well within specific temperature ranges. For reheating food, Pyrex containers can safely handle temperatures up to 400°F-425°F. However, it is important to refer to the owner’s manual or handling instructions provided with each specific Pyrex product to determine the exact temperature limits.
Pyrex is a convenient option for heating food directly from the refrigerator or freezer because it is compatible with freezing temperatures. Some Pyrex products can be frozen at 0°F and then placed directly in the oven at temperatures up to 400°F without shattering.

The Challenges of Broiling

Broiling is a cooking technique that relies on high heat to cook food and give it a desirable texture. It involves exposing food to temperatures higher than those typically used for baking or roasting, usually between 400°F and 550°F. Broiling is often used to add color and a crispy texture to the surface of food.
When it comes to broiling, glassware becomes a risky choice. The temperature range used in broiling easily exceeds the recommended limits for most glassware. Some ovens even have a dedicated broil function that can raise the internal temperature to approximately 500°F. When exposed to such high heat, glass, regardless of type, is susceptible to shattering.

Why Pyrex shouldn’t be used for broiling

One might assume that since Pyrex can withstand temperatures up to 400°F, it could potentially handle broiling at or below that temperature range. However, there are several reasons why using Pyrex for broiling is not advisable.
First, oven temperature settings can be inaccurate, and ambient conditions can cause discrepancies in the internal temperature of the oven. As a result, the actual temperature of the glassware may exceed the intended broiling temperature.
Second, the type of food being cooked can affect the temperature of the glassware. Dense foods that cover most of the surface of the glassware, such as lasagna, can heat up quickly and push the glass beyond its breaking point.
When glass is exposed to temperatures beyond its recommended range, it can develop cracks around its surface. These micro-fractures are not visible to the naked eye, but can be seen under a microscope. These flaws compromise the structural integrity of the glass, making it susceptible to shattering when exposed to high temperatures again.

Alternative materials for grilling

Given the limitations of Pyrex for broiling, it is important to explore alternative materials that are better suited for this cooking technique. The following materials are recommended for optimal results when broiling food:

  1. Steel: Steel is a strong material that can withstand mechanical and thermal stress. It has been used for centuries to cook food under direct heat and is considered one of the best materials for grilling. Steel has a higher temperature tolerance and can easily withstand the maximum temperatures of most ovens. In addition, steel pans excel at distributing heat evenly, resulting in consistent and desirable textures on the surface of the food. Cast iron, stainless steel, or any other food-grade steel pan is an excellent choice for broiling.
  2. Aluminum: Aluminum is another good material for broiling because of its heat tolerance and light weight. Oven-safe aluminum bakeware is inexpensive and easy to use. These heat-resistant aluminum products are available in a variety of sizes and can provide similar results to steel pans in terms of texture and cooking results on the surface of the food.
  3. Cast Iron: Cast iron cookware is known for its exceptional heat retention and distribution properties. It can withstand high temperatures without warping or cracking, making it an excellent choice for frying. Cast iron pans distribute heat evenly, ensuring that food cooks evenly. However, it is important to properly season and maintain cast iron cookware to prevent rusting and maintain its longevity.
  4. Stoneware: Stoneware is a type of ceramic material designed to withstand high temperatures. It is an excellent option for grilling because of its heat resistance and ability to distribute heat evenly. Stoneware pans are ideal for achieving a crispy texture on the surface of food while retaining moisture inside. It is important to follow the manufacturer’s instructions for proper care and use of stoneware to avoid damage.
  5. Broiler-safe glassware: While Pyrex is not recommended for broiling, there are specific types of glassware designed to withstand high temperatures. Look for glassware that is specifically labeled as broiler safe or can withstand temperatures above the maximum broiling temperature range. These specialty glassware products are made from different types of glass that can withstand the thermal stress associated with broiling.


In conclusion, Pyrex should not be used for broiling due to the risk of shattering from the high temperatures involved in the broiling process. While Pyrex is known for its durability and ability to withstand various cooking conditions, broiling exceeds the recommended temperature limits for most glassware.
When broiling food, it is advisable to use alternative materials such as steel, aluminum, cast iron or broiler-safe glassware. These materials can withstand the high temperatures required for broiling without compromising their structural integrity. By choosing the right materials for broiling, you can achieve the desired textures and flavors in your cooked foods while ensuring safety in the kitchen.


Can Pyrex be used for grilling?

No, Pyrex should not be used for grilling. The high temperatures involved in the broiling process can cause the glass to shatter.

What temperatures can Pyrex withstand?

Pyrex is typically designed to withstand temperatures up to 400°F-425°F. However, it is important to refer to the specific product’s user manual or handling instructions to determine the exact temperature limits.

Why is Pyrex not suitable for grilling?

Glass, including Pyrex, has inherent flaws that make it susceptible to shattering when exposed to extreme temperatures. The expansion and contraction caused by high heat can create microscopic cracks in the glass, compromising its structural integrity.

What are the risks of using Pyrex for cooking?

Using Pyrex for grilling carries the risk of glass shattering, which can cause injury and damage to food and surrounding surfaces. Broiling at temperatures above the recommended range can cause defects to develop in the glass, making it more likely to shatter in the future.

What materials are suitable for grilling?

Alternative materials such as steel, aluminium, cast iron and broiler-safe glassware are recommended for broiling. These materials have higher temperature tolerances and are better equipped to withstand the intense heat of the broiling process.

Can Pyrex be used for other cooking methods?

Yes, Pyrex is suitable for various cooking methods such as baking, roasting and heating food in the oven. It is important to follow the recommended temperature limits provided by Pyrex for each specific cooking technique to ensure safe use of the glassware.