Updated 29 July 2026 · Written by Daniel Wright
You can put a glass bowl in the oven only if it is labeled oven-safe or made of tempered borosilicate glass, like most Pyrex baking dishes. Regular drinking glasses and decorative bowls are not designed for oven heat and can shatter. Always check for an oven-safe marking and avoid sudden temperature changes.
Only oven-safe or tempered glass (like Pyrex bakeware) is oven-safe. Regular and decorative glass can shatter. Avoid sudden temperature swings.
How to Tell If Glass Is Oven-Safe
- Look for an oven-safe symbol or wording on the base of the bowl.
- Tempered borosilicate glass, used in dedicated bakeware, is designed for oven heat.
- Regular drinking glasses, storage bowls and decorative pieces are not oven-safe.
- When in doubt, use a proper baking dish instead.
Avoiding Thermal Shock
Even oven-safe glass can crack from thermal shock, a sudden temperature change. Do not move glass straight from the fridge or freezer into a hot oven, and never set hot glass on a cold, wet or metal surface. Let it come toward room temperature first. For baking, a purpose-made bakeware set is the safest choice, and keep everyday glass storage containers for the fridge.
Frequently Asked Questions
How do I know if my glass dish is oven-safe?
Check the bottom for an oven-safe symbol or text. Dedicated glass bakeware, such as Pyrex casserole dishes, is oven-safe, while drinking glasses and storage bowls generally are not.
Why did my glass dish shatter in the oven?
Usually thermal shock, a sudden temperature change, such as putting a cold dish into a hot oven, or the glass simply was not oven-safe to begin with.
