Most food-grade parchment paper is considered safe by food safety regulators when used within its rated temperature, which is usually around 425°F to 450°F. The toxicity question depends almost entirely on what the paper is coated with.

Uncoated and silicone-coated parchment paper is widely considered safe. Quilon-coated parchment paper (made with chromium, a heavy metal) and certain PFAS-treated parchment papers raise more concern. Bleached white parchment paper is cosmetically whitened but is generally considered safe at intended cooking temperatures.

If you want a simple rule, look for unbleached, silicone-coated, PFAS-free parchment paper, and stick to your brand's temperature limit. We break each of these down below.

Parchment paper, also called baking paper, starts as thin vegetable-based cellulose paper. To make it grease-resistant and able to handle oven heat, manufacturers usually treat the paper with sulfuric acid, a process called parchmentizing. The result is a smooth, water-resistant sheet that food doesn't easily stick to.

That base paper is rarely the issue. The toxicity questions almost always come down to what's added on top of the paper to enhance its nonstick performance, give it a clean white color, or improve its grease resistance.

Not all parchment paper is made the same way. The four ingredient categories below are where the real differences live.

PFAS (per- and polyfluoroalkyl substances) are a family of more than 15,000 synthetic chemicals used since the 1940s for their water-, grease-, and stain-resistant properties. They're nicknamed forever chemicals because they don't readily break down in the environment or in the body. According to the CDC, nearly all people in the United States have measurable PFAS in their blood, and the agency links PFAS exposure to potential health effects including thyroid changes, immune system effects, and elevated risk of certain cancers.

Some parchment paper brands have historically used PFAS to boost grease and moisture resistance. Independent third-party testing by groups like Mamavation has found trace PFAS in several mainstream brands, with results compared against the standard for intentionally added PFAS in food packaging.

There is encouraging regulatory news here. In February 2024 the FDA announced that PFAS-containing grease-proofing materials are no longer sold for use in food packaging in the United States. That's meaningful for new products on store shelves, though inventory already in homes may predate the change.

If you want to go deeper on this category of chemicals, our guide to the difference between PFAS, PFOA, and PTFE explains the chemistry, and our overview of PFAS in nonstick cookware covers how the same concerns show up in pans.

Quilon is a synthetic coating built around chromium, a heavy metal. It's used as a cheaper alternative to silicone in some commercial parchment paper. Public safety data on Quilon-coated parchment paper is relatively limited compared to silicone, and chromium compounds are regulated in food packaging.

The practical takeaway: if a brand doesn't disclose its coating, it's worth asking. Reputable parchment paper brands typically label their product as silicone-coated, uncoated, or PFAS-free on the box.

White parchment paper has been bleached. Brown parchment paper has not. The bleaching process typically uses chlorine, chlorine dioxide, hydrogen peroxide, or ozone, and its purpose is cosmetic, to give the paper a clean white look. The food itself doesn't come into direct contact with the bleaching agents the way it does with a surface coating, but many home-cooks prefer unbleached parchment paper as a more straightforward choice that avoids the question altogether.

Food-grade silicone is the most common coating on parchment paper sold in the United States today. The FDA considers food-grade silicone safe for cooking applications within rated temperatures. Independent testing of silicone-coated parchment paper has generally found non-detect results for organic fluorine, the marker labs use to flag PFAS presence.

One active area of research is whether silicone (specifically the siloxanes that make it up) migrates into food at very high temperatures. Studies to date, including peer-reviewed research from the Technical University of Denmark, have not found meaningful migration into baked goods at standard oven temperatures, though scientists note that more long-term data would be helpful.

Lightly browned parchment paper is generally not considered a safety issue, and most home-cooks see some browning around the edges during long roasts. Heavily charred, smoking, or partially burned parchment paper is a different story. The combustion process can produce compounds you don't want to ingest, so the safer move is to discard the burnt sheet along with any food in direct contact with the burnt area.

It's also a sign that the oven temperature, broiler setting, or cooking time exceeded what the parchment paper was rated for. Knock the temperature down or swap to a different surface next time.

Uncoated parchment paper can usually be reused safely across several bakes, as long as it still looks intact and hasn't absorbed strong flavors or fats. Coated parchment paper is best treated as single use. Repeated exposure to heat and to acidic foods can wear down a coating over time, which is when leaching becomes a more reasonable concern.

If you find yourself going through a lot of single-use parchment, that's a good signal it might be worth investing in reusable bakeware, which we cover further down.

The easiest way to skip the parchment paper question is to reach for reusable cookware that doesn't need a liner. Here are the most useful swaps.

Reusable silicone mats are heat-safe to about 450°F, dishwasher safe, and last for years. They're a strong everyday swap for cookies, roasted vegetables, and sheet-pan dinners.

A well-seasoned cast iron pan develops a naturally nonstick surface over time, and properly preheated stainless steel releases food better than most people expect. Both have decades of track record and don't rely on a coating to perform.

Modern reusable cookware lets you skip single-use parchment paper for most everyday baking, roasting, and reheating. A few of our own picks for this:

• Our Oven Pan that replaces your single-use parchment paper, designed for baking, roasting, and crisping and oven safe up to 450°F.

• Our Bakers, stoneware bakeware with a naturally nonstick ceramic interior glaze, oven safe to 450°F and dishwasher safe.

• Our Always Pan®, a multi-functional ceramic nonstick pan made without PFAS, PTFEs, PFOAs, lead, and cadmium, oven safe up to 450°F so you can move from stovetop to oven without a parchment liner.

• Our Titanium Always Pan® Pro with a coating-free Titanium nonstick interior, made without PFAS, PTFE, and PFOA and oven safe up to 1,000°F for high-heat roasting and searing.

• Our Wonder Oven®, a 6-in-1 air fryer and toaster oven with non-toxic nonstick interior surfaces, with interior surfaces and accessories made without PFAS.

If you want to think bigger picture about what to stock, our guide to the safest cookware materials and our piece on how to avoid PFAS in cookware are good places to start. For a deeper read on the ceramic option specifically, see is ceramic cookware safe.

Most parchment paper is considered safe when used within its rated temperature, and the practical question for home-cooks is what's on the paper, not the paper itself. Picking unbleached, silicone-coated, PFAS-free parchment paper covers the basics. And stocking a few pieces of well-built reusable bakeware means you'll reach for the parchment paper roll a lot less often in the first place.