Food being baked in an ovenproof dish.
The definition of ovenproof is cookware or materials that are heat resistant and that can be used in an oven without cracking or shattering.
A Pyrex dish that you can put in an oven is an example of an ovenproof baking dish.
able to withstand the high temperatures of an oven without breaking, burning, melting, etc.: an ovenproof baking pan
From oven +"Ž -proof