What is a flat, rectangular metal pan used in an oven called?

I would've said Baking Tray

Arohanui, when my aunt baked a cake on a sheet pan, she called it a sheet cake

nthabi, I think it is spelt differently in the USA to Britain, its definitely pronounced differently as I thought for years that it was a different metal bit like tomata and tomarto both spelt tomato

We always called it a "cookie sheet," although we use it for a lot more than that.

the option one that named Mangal in India we coll Mangal Tuesday

Arohanui, no

MiniMe, that's right ✅

I thought it was spelt and pronounced ALUMINIUM🤦