Capable of withstanding high temperatures

• Able to stand the heat?
• Dish safe for baking

Wiktionary Word definitions in Wiktionary
a. (context of a dish English) Can be used in an oven, will not be damaged if used in an oven.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
adjective COLLOCATIONS FROM CORPUS ■ NOUN dish ▪ Roll up each piece of fish and put into an ovenproof dish , pour over the marinade and dot with the butter. ▪ Place extra stuffing in an ovenproof dish with a cover. ▪ Bring to the boil and pour into an ovenproof ...