ANGIX 6 and 12 Cup Muffin Baking Tray :-. This nonstick steel muffin mould is made from BPA free food grade Carbon Steel. No cracking, odourless, non-toxic harmless. Our muffin pan can be used at temperature ranging from-40°F up to 450°f (-40°C to 230°C), suitable for oven, microwave, dishwasher and freezer.