Bakeware sits in a hotter, longer-contact situation than almost anything else in the kitchen. A roasting pan spends an hour at 400°F in direct contact with fat and acid, which is precisely the combination that pulls material out of a surface.
It is also the category where non-stick coatings are most common and wear out fastest, because we scrape them with metal and blast them with heat.
The short answer
Glass and stainless steel are the two materials you never have to think about. Add unglazed stoneware if you bake bread, and use unbleached parchment instead of relying on a coating.
That combination covers everything most people bake, and none of it degrades.
The materials
Glass (borosilicate or tempered)
Completely inert. It does not react with acid, does not absorb odour, does not shed anything, and lets you see the browning on the base. For casseroles, brownies, and roasted vegetables it is hard to beat.
The one real rule is thermal shock: do not move glass straight from fridge to hot oven, and never set a hot dish on a wet or cold surface. Older borosilicate handles this better than modern tempered soda-lime glass, which is what most current bakeware actually is.
Stainless steel
The workhorse for sheet pans. Non-reactive, effectively unbreakable, and safe at any oven temperature. It browns well and will outlast your oven.
Food does stick to bare stainless, which is what parchment is for. Look for 18/8 or 18/10 stainless rather than unspecified “steel.”
Aluminium and aluminised steel
Most commercial sheet pans are aluminium, and for good reason — it conducts heat beautifully and bakes very evenly. The consideration is that bare aluminium is reactive: acidic foods like tomato, citrus, and vinegar-based marinades will pit the surface and pick up a metallic taste.
For dry baking such as cookies and roasted vegetables, bare aluminium is a reasonable choice. For anything acidic, line it with parchment or use glass instead. Anodised aluminium has a hardened, far less reactive surface.
Stoneware and ceramic
Excellent heat retention and superb for bread, pizza, and slow-baked dishes. Unglazed stoneware seasons over time much like cast iron.
The caution here is glazes. Stick to reputable manufacturers, and be genuinely wary of vintage, handmade, or imported decorative pieces, where lead and cadmium in glazes remain a real issue. Anything sold as decorative should stay decorative.
Cast iron and enamelled cast iron
Outstanding for cornbread, cobblers, and no-knead bread. Same trade-offs as on the stovetop: bare iron reacts with acid, enamelled does not.
Silicone
Food-grade silicone is generally considered stable at normal baking temperatures, and it is genuinely convenient for muffins and intricate moulds.
Two practical notes. Quality varies a great deal — a cheap mould that smells of chemicals when heated is telling you something, and filler-laden silicone will show white when you twist it, whereas pure silicone will not. It also browns poorly, because it insulates rather than conducts.
What to be careful with
- Non-stick bakeware. The coating on muffin tins and loaf pans takes a harder life than a skillet coating does. Retire anything scratched or flaking, and never run an empty coated pan under a broiler.
- Dark non-stick pans. These absorb more heat and over-brown edges, which is a baking problem before it is a safety one.
- Vintage or imported glazed ceramics. The main lead risk in a modern kitchen.
- Aluminium foil for acidic foods. Foil pits and dissolves against tomato and citrus. Parchment is the better liner.
- Bleached parchment. Unbleached is widely available and avoids the question entirely.
Parchment does the work a coating used to
This is the practical shortcut that makes non-stick bakeware unnecessary for most people. Unbleached parchment on a stainless or aluminium sheet gives clean release, protects reactive metal from acidic food, and makes cleanup trivial.
Note that parchment and wax paper are not interchangeable — wax paper is not oven-safe. And silicone baking mats work well for cookies, though they soften browning on the base.
A sensible starter set
- Two stainless or aluminium half-sheet pans
- One 9×13 glass baking dish
- One glass or stoneware loaf pan
- One stainless or glass pie dish
- A roll of unbleached parchment
Frequently asked questions
Is aluminium bakeware safe?
For dry baking, it is widely used and generally considered fine — dietary aluminium comes overwhelmingly from other sources. The genuine issue is reactivity with acidic food, which affects taste and pits the pan. Line it or choose glass for those dishes.
Can I put glass bakeware under the broiler?
Generally no, unless the manufacturer specifically says so. Direct radiant heat and the sharp temperature differential are exactly the conditions that shatter glass.
Is silicone bakeware actually safe?
Food-grade silicone is considered stable within normal baking ranges. Buy from established brands, avoid anything that smells when heated, and do not use it above its stated temperature limit.
How do I know if old ceramic bakeware has lead?
You cannot tell by looking. Home lead test swabs give a rough indication. The practical rule is to treat vintage, handmade, and imported decorative glazed pieces as display items rather than bakeware.
Keep going
This is one section of the Non-Toxic Kitchen Guide, which covers cookware, cutting boards, food storage, and what the labels are really claiming.