are silicone mats safe for baking?
Silicone Baking Mat Safety: Is Silicone Safe for Baking? Food-grade silicone is a non-toxic polymer mostly made from silica (sand). It's generally considered safe and non-toxic, so there's no need to worry about baking with silicone mats. ... In general, most silicone baking mats should not be used under the broiler.