· Pizza Stones & Baking Surfaces
Big Green Egg Flat Pizza & Baking Stone, Is It Non-Toxic?
No coating of concern recorded, and no PFAS statement from the brand.
The brand has published no PFAS statement for this product that we could find.
The better-graded swap
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
90/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Ceramic-coated pizza stone; porous unglazed ceramic base
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Is Big Green Egg Flat Pizza & Baking Stone non-toxic? What it is made of
This product is a porous unglazed ceramic base (the working surface) with a ceramic coating. Unglazed ceramic pizza stones are traditionally fired at high temperature, which stabilizes the clay body and reduces leaching risk. The ceramic coating adds durability and thermal conductivity. Neither unglazed nor ceramic-coated surfaces are known to release problematic compounds during normal oven use at typical baking temperatures (500, 700 degrees Fahrenheit).
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Coating degradation and delamination over time
Like all ceramic-coated products, this stone may experience chipping or flaking with extended use, thermal cycling, or mechanical damage. Once the coating separates, the underlying porous ceramic can absorb water and foods, though not a documented acute safety hazard.
Thermal cracking and structural failure
Ceramic pizza stones are brittle and can crack if exposed to rapid temperature changes or mechanical shock. Failure does not release hazardous chemicals but can render the product unusable and create sharp edges.
Microorganism growth in porous base if retained moisture
If the stone is not dried thoroughly after cleaning or if it absorbs water, the porous ceramic base can retain moisture and support mold or bacterial colonization. Regular air drying and avoiding prolonged soaking mitigate this.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
No testing or recall data exists for this specific GreenPan pizza stone showing lead or cadmium contamination. Ceramic food-contact surfaces sold in the US are subject to FDA limits, and no violation has been recorded for this product.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
GreenPan is primarily known for non-stick cookware marketed with focus on reduced Teflon-type coating claims. The brand has not issued a public statement about PFAS content in this pizza stone product. No recalls or safety warnings specific to this ceramic baking stone have been recorded. The company's cookware lines have faced scrutiny in the past regarding coating durability claims, but no similar issues are documented for this ceramic product.
How it compares in its category
Ceramic pizza stones are among the lowest-concern baking surfaces. Unglazed terracotta and ceramic alternatives carry the same basic safety profile. This product avoids metal-based stones (which can transfer heat unevenly and rarely leach) and coated cast iron (which can degrade). The ceramic coating here is more durable than bare terracotta but functions similarly in use.
If you buy it
Preheat the stone gradually to avoid thermal shock cracking. Do not use it on a stovetop. Allow it to cool completely before washing; thermal stress can shorten its lifespan. If visible cracks or large chips appear in the ceramic coating, replacement is advisable to prevent food contact with the underlying porous base. Avoid prolonged water soaking, as absorbed moisture can cause spalling when reheated.
What is not known about PFAS in this product?
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Big Green Egg Flat Pizza & Baking Stone?
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
- Ceramic (clay-based baking stone)
- The brand calls it PFAS-free, which we have not verified
- Glaze degradation and surface leaching
3 hazards checked on this product, all on its full breakdown.
Deluxe Square Pizza Stone with Rack
- ceramic or unglazed stone; no nonstick coating
- The brand calls it PFAS-free, which we have not verified
- Ceramic or stone cracking and fragmentation
2 hazards checked on this product, all on its full breakdown.
- carbon steel (bare metal, no coating)
- We found no PFAS statement from the brand
- Rust and corrosion
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonMore pizza stones & baking surfaces grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.