The Best Non-Toxic Slow Cooker Liners of 2026
14 of the 15 slow cooker liners PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 93.3% of the category, as of October 2026, leaving 1 that passes. The highest graded is Slow Cooking Liners at 90 out of 100.
Every grade below is built from published materials, ingredient lists, certifications and brand disclosures, scored on one public rubric and ranked best-graded first. Each score links to the full breakdown of what earned it, and the numbers across the whole dataset are published too.
Are slow cooker liners non-toxic?
1 of the 15 slow cooker liners we graded clear our screen and 14 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on slow cooker liners in this category are VOCs and off-gassing, BPA and bisphenols, microplastics, phthalates, lead. The highest graded here is Slow Cooking Liners at 90 out of 100.
Why Slow Cooking Liners wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 3 products it beats, so you can see exactly where the 75 points between the top and the bottom of this slow cooker liners ranking come from.
The winner
Made of Unbleached parchment paper.
- +30Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Brand-stated PFAS-free. The brand states this product is PFAS-free. We have not verified the claim.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
10risk points in total, which is a grade of 90
What the grade does not fix. Nothing specific to this product adds risk, so what remains is the category baseline that every product here starts from, and our graders recorded 2 other hazards on it. See the full breakdown.
What it beats, and why
What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.
Made of polyethylene/plastic liner.
- +30Category baseline
- +15No PFAS disclosure
- -10Base material not linked to PFAS
35risk points, a grade of 65
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.
Made of polyethylene film with grease-resistant coating.
- +35Waterproof / stain-resistant treatment
- +30Category baseline
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
80risk points, a grade of 20
What puts it behind. Non-stick, chemistry undisclosed, +40 points. Marketed as non-stick without stating the coating chemistry. The winner carries no such factor.
Made of Plastic film liner, coating unspecified.
- +40Non-stick, chemistry undisclosed
- +30Category baseline
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
85risk points, a grade of 15
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
What to watch for in slow cooker liners
Beyond the PFAS grade, these are the things our graders recorded on the 15 slow cooker liners in this category. We assess from materials, brand statements and published research. We do not lab-test.
- VOCs and off-gassing
Volatile compounds that evaporate out of a material at room temperature, which is what a new product smell is.
Found on 1 of these slow cooker liners. Plausible but unconfirmed on 2 more, meaning nobody has ruled it out. EPA
- BPA and bisphenols
Chemicals that harden plastic and line metal cans, and the replacements sold as BPA-free.
Found on 1 of these slow cooker liners. Plausible but unconfirmed on 1 more, meaning nobody has ruled it out. NIEHS
- Microplastics
Plastic fragments small enough to shed from a product into food, water or air without anyone seeing it.
Plausible but unconfirmed on 11 more, meaning nobody has ruled it out. EPA
- Phthalates
Plasticisers that keep vinyl soft and make a scent linger, usually undeclared.
Plausible but unconfirmed on 1 more, meaning nobody has ruled it out. NIEHS
The safest slow cooker liners we graded, lowest PFAS risk first
- 1
Highest grade here
Slow Cooking Liners
90ExcellentPFAS grade- Unbleached parchment paper
- The brand calls it PFAS-free, which we have not verified
- Thermal degradation and smoke release
2 hazards checked on this product, all on its full breakdown.
The slow cooker liners we would skip
Lowest scoring in this category, worst first, with the reason.
- 15Bad
- 15Bad
- 15Reynolds Kitchens Slow Cooker LinersBad
Polymer thermal degradation and leaching
What we check on slow cooker liners
- Confirmed PFAS, PTFE or fluoropolymer content, which is the heaviest penalty we apply.
- Stain, water or grease resistant treatments, which usually mean fluorinated chemistry.
- Whether the brand discloses what is in the product, or stays silent behind a “clean” claim.
- Independent lab results and certifications where they exist.
Full point-by-point rubric on the methodology page.
The slow cooker liners brands we found no PFAS statement from
We found no PFAS statement from 5 of the brands here. That is our research, not proof a brand has never said anything, and it is not evidence of harm. It is why none of them score well on disclosure.
Better Valu, Crock-Pot, Essential Everyday, Glad, Handi-Wrap.
The brands that have published something, and what each of them actually said, are in our record of what every brand has said about PFAS.
Common questions about PFAS in slow cooker liners
Are slow cooker liners PFAS free?
14 of the 15 slow cooker liners PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 93.3% of the category, as of October 2026, leaving 1 that passes. The highest graded is Slow Cooking Liners at 90 out of 100. The lowest graded is Essential Everyday Dierberg Essential Everyday Slow Cooker Liner at 15 out of 100.
Are slow cooker liners non-toxic?
1 of the 15 slow cooker liners we graded clear our screen and 14 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on slow cooker liners in this category are VOCs and off-gassing, BPA and bisphenols, microplastics, phthalates, lead. The highest graded here is Slow Cooking Liners at 90 out of 100.
Which are the safest slow cooker liners to buy?
On our grades, Slow Cooking Liners at 90 out of 100, which we band as Excellent. These are model-based assessments from published materials, ingredient lists, certifications and disclosures, not laboratory tests, so treat them as the lowest risk we can evidence rather than a safety guarantee.
Which slow cooker liners grade best for PFAS?
Slow Cooking Liners, at 90 out of 100, which we band as Excellent. It is unbleached parchment paper.
Which slow cooker liners should I avoid?
The three lowest scoring we hold are Essential Everyday Dierberg Essential Everyday Slow Cooker Liner at 15, Slow Cooker Liners at 15, Reynolds Kitchens Slow Cooker Liners at 15. The problem with the first is that skip; slow cooker liners prone to PFAS coatings, Glad silent.
Which slow cooker liners brands have not published a PFAS statement?
We found no PFAS statement from 5 of the brands we scored in this category, including Better Valu, Crock-Pot, Essential Everyday, Glad, Handi-Wrap. That is what our research turned up, not proof a brand has never said anything, and a missing statement is not evidence of harm. It is the reason those brands cannot score well on disclosure.
Do you lab test slow cooker liners?
No. We score from published ingredient lists, materials, certifications, disclosures and third party lab results where they exist. Where a product has been independently tested we use that result and say so.
More kitchen and cooking categories we have graded
Same rubric, same scale. These are the categories closest to slow cooker liners.
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Does a particular brand of slow cooker liners have PFAS?
Brands we grade across the catalogue
Everything we have scored from these brands, not just slow cooker liners.
We also wrote this up at length. PFAS in Slow Cooker Liners, Where One Brand Spans 65 to 15
Want to filter the whole category yourself? Browse all 15 slow cooker liners.