are all pyrex bowls oven-safe?

In this article, we will answer the question “Are all pyrex bowls oven safe?”

Are all pyrex bowls oven-safe? 

Yes, pyrex bowls are oven-safe and can be used for baking and cooking anything in the oven. However, some measures must be taken to ensure safety and avoid damage to the cookware. The following reasons are why pyrex can crack in the oven.

Why does pyrex crack in the oven? 

Fluctuation in the temperature, uneven heating, and direct contact with the heat source can cause breakage, however, pyrex dishes made before 1988 are less likely to crack under extreme temperature changes as it is made up of Borosilicate glass rather than Soda-lime glass which is used to make pyrex bowls now.  

Fluctuation in Temperature 

Sudden changes in temperature can cause damage to the bowl thus should be avoided. It can endure temperatures ranging from 446°F to 914°F. According to the pyrex website, the bowl should be allowed to cool down before any further cooking. If exposed to extreme temperature changes, the pyrex can explode in the oven. 

Uneven Heating 

Uneven heating in the oven can not only lead to undercooked or overcooked food but can also damage the pyrex bowl resulting in breakage. 

Contact with Heat Source 

According to the Pyrex website, pyrex bowls should not be placed in the broiler, over the stove, on the grill, and directly to the heat source to prevent damage. 

Ways to prevent Pyrex from any damage 

There are several measures you can take to prevent any possible damage to your pyrex bowls. 

Add liquid to the pyrex bowl 

Even the pyrex website suggests to “add a small amount of liquid sufficient to cover the bottom of the dish prior to cooking foods that may release liquid”. This will prevent the hot glass from getting in contact with cool liquids that may be released by some food during cooking. 

Use Gloves 

When taking the bowl out of the oven, gloves or mittens must be used to avoid any injury. Make sure these mittens are dry as wet clothes conduct heat. 

Cooling Time 

Allow the bowl to fully cool before putting it into the fridge, freezer, or dishwasher. 

Can pyrex bowls be used in Microwaves? 

Yes, they are also microwave safe but it is not recommended to reheat dry food in the microwave in the pyrex bowl as a sudden change in temperature can lead to breakage

Things to remember before using Pyrex bowls in the oven 

  • Do not use already cracked bowls
  • Empty pyrex bowls should not be heated 
  • Do not use pyrex bowls to microwave popcorn 


In this article, we answered the question “Are all pyrex bowls oven-safe?”  and listed all the possible reasons why a pyrex bowl could break in the oven and the ways to avoid it.