10 Pros And Cons Of Slow Cooker Liners (+ Alternatives)

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Do you hate the clean up after a meal? A slow cooker saves you a bunch of pots and pans to clean but there’s still that one pot that needs soaking and scrubbing. Slow cooker liners (AKA crock pot liners or crock pot bags) change that. They make clean up painless and effortless. So, why would you not use a crock pot liner? What are the alternatives? Here I cover 10 pros and cons of slow cooker liners (and alternatives).

slow cooker liners, crock pot bags, crockpot liners, are single use bags for no mess when using a slow cooker or crock pot
Using slow cooker liners or crock pot bags is a convenience in the kitchen, but there’s more

After a busy day, everyone wants a quick easy way of enjoying a hearty meal. An Instant Pot provides for quick meals but it’s not an appliance you’d want to leave unattended all day, as I explain with using Instant Pots.

A home-cooked meal prepared in an automatic slow cooker helps in a low fuss way and is enjoyable. But still, there’s always that clean up after the meal that’s a drag.

Slow cooker liners make life even easier, reducing the need to clean that pot after preparing the meal and giving you more time to enjoy the things you like to do.

What is a slow cooker liner?

What is a slow cooker liner? Slow cooker liners are plastic bags that cover the inside of your slow cooker (AKA crock pots) so food does contact the pot and stick to it. They are made for easy clean up. You simply discard them after use. But there are other advantages and some downsides, so read on…

Some call them slow cooker bags others call them crock pot bags or liners. They mean the same.

Reynolds Kitchens Slow Cooker Liners, Regular, 6 Count (Pack of 1) crock-pot bags
Crockpot bags adding convenience

Many of these cooking liners are marketed as bisphenol A free (BPA-free) and formulated without BPS (Bisphenol S). Reynold’s kitchen state their crock-pot bags are made of heat resistant nylon.

Nylon slow cooker liners…

There are different brands of crock pot liners available, probably with varying degrees of quality of plastic. But, even so, if they are sold in the US, they need to meet the Food and Drug Administration (FDA) requirements.

The plastic typically used in slow cooker liners is a type of nylon blend that resists high heat.

The better quality is likely to be more expensive. But overall these are heavy-duty crockpot bags. They need to withstand high heat and avoid breakage when you are transferring a crockpot bag full of food to store in the freezer or take with you on an outing.

You’ll get four to several in a pack. A 50-piece pack would last six months of two slow-cooked meals a week.

The common ones fit 3 to 6-quart slow cookers of either round or oval shape.

How to use slow cooker liners

Here is the simple step by step on how to use slow cooker liners…

Step 1. Line the pot

Open the liner in the pot, evening it out vertically and horizontally. Tip: Avoid tucking the liner into the heating element section of the slow cooker as you don’t want it in direct contact with the surface temperature, which may exceed 400 °F. 

Step 2. Add the food

Add your ingredients to the pot with the liner in place. That is, place the food on top of the liner.

Step 3. Cover the contents

Put the lid on the pot ensuring a good seal. Optional: Stand the excess liner up around the lid to avoid steam from under the lid dripping down. 

Step 4. Relax

After letting the slow cooker cool, simply lift out the liner and dispose of it in the garbage. Liners are not reuseable. And, there you have effortless clean up!

There’s no scrubbing.

If you prefer visual instructions on how to use slow cooker liners…

WRAPOK Slow Cooker Liners Cooking Bags BPA Free for Oval or Round Pot, Large Size 13 x 21 Inch, Fits 3 to 8.5 Quarts - 3 count (30 Bags Total)

Here’s a video showing you how the Reynolds slow cooker liners work.

Check out the Reynolds slow cooker liners at Amazon

Crock pot bags – the good and the bad

Like everything, there are pluses and minuses to using slow cooker liners. So here’s what to know about using slow cooker liners. I’ve listed 10 pros and 10 cons of using them, so you can weigh them up and decide for yourself if they are right for you.

10 Pros of using crockpot liners

Many of these are obvious advantages of using a cooking liner inside your pot. Some you may not have known.

1. Quick and easy clean up

Clean up is as easy as removing the liner and depositing it in the garbage. No more stubborn, stuck-on messes where you have to clean the crock pot top to bottom, inside & out.

SMARTAKE Slow Cooker Liners, 13 × 21 Inches Disposable Cooking Bags, Easy Clean-Up Plastic Bags, Fit 3QT to 8QT, for Slow Cooker, Crockpot, Aluminum Cooking Trays, Pans, 1 Pack (30 Liners)

2. Water savings

Less water needed in the clean up — You won’t need to soak your slow cooker and this means you will use less water.

3. Dishwasher efficiency

There’s more room in the dishwasher for other items, as there’s no need for this intensity of cleaning.

4. Freeze leftovers easily

Some home cooks freeze meals in these crockpot bags and then, when it’s time, place the frozen meal directly in the crockpot.

You should know that the manufacturers, Reynolds Kitchen, advise that “While the slow cooker liner material is excellent for cooking, it does not provide a barrier against moisture loss for food storage. Freezer storage is not recommended…”

So it’s probably not a good idea to leave these meals in these cooking pot liners in the freezer for too long.

5. Makes easy transporting of meals

For many people, the liners mean less stress in preparing meals that they then take to other venues. They find that you can easily take the cooked food with you in a slow cooker liner. Just place the liner containing the food into a vessel that is lighter, portable, or less fragile than the crockpot for transporting elsewhere.

Contrary to this, the manufacturers, Reynolds Kitchen, advise that “leftover food should only be stored in the liner while it is still in the slow cooker bowl. At no time should the liner be lifted from the bowl with food inside.”

This is probably a safety concern. If the bag busted the hot contents could burn you.

6. Adaptive aid

The liners make life easier for people who find the lifting and cleaning of crockpots difficult because of arthritis or other mobility problems or physical impediments.

7. Stress-free meal preparation

You can prepare the ingredients the night before and place these in the liner and store it in the refrigerator until the morning. This is more convenient than trying to fit a bulky crockpot in the refrigerator.

This makes the morning less stressful and preparing the slow-cooked meal in the morning is just a simple matter of taking the food out of the refrigerator and placing it in the slow cooker and turning the appliance on.

8. More nutritious meals

Slow cooking is a healthy option for preparing meals, as it locks in the flavor and goodness of the ingredients we add to the pot.

Using slow cooker liners makes life easier and you’re likely to enjoy using this way of preparing meals more frequently! This then equates to more nutritious home-cooked meals and fewer take-outs.

9. Cook multiple meals at once

WRAPOK Slow Cooker Liners Cooking Bags BPA Free for Oval or Round Pot, Large Size 13 x 21 Inch, Fits 3 to 8.5 Quarts - 3 count (30 Bags Total)

By using two or more liners side by side, you can cook multiple items separately in the same pot. This is great news for someone within the family who requires a special diet or has a preference for certain foods.

Or, if you have a large slow cooker, you can prepare two separate dishes when entertaining or wanting to save time and energy costs if only one or two of you are dining.

10. Many uses in cooking

Slow cooker liners serve other cooking methods.

They are versatile in that most brands of these liners can be used in the oven with bakeware or a roaster pan or in pans on the cooktop to steam vegetables or the like. People use them in rice cookers and toaster ovens. They are cooker safe up to temperatures of 400 ºF (204 ºC).

Using a slow cooker liner in instant pot: Slow cooker bags are safe to use with Instant Pots in slow cooker mode, but NOT when the Instant Pot is in pressure cooker mode.

Do not use slow cooker liners in a pressure cooker: Slow cooker liners are not for use with any type of pressure cooker, including an Instant Pot in any mode other than a slow cooker.

Here’s the recommended product related to this article:

Reynolds Kitchens Slow Cooker Liners, Regular (Fits 3-8 Quarts), 4 Count (Pack of 12), 48 Total
Reynolds Kitchens slow cooker liners fit

2 sizes – small slow cooker liners and regular slow cooker liner. See product details at Amazon

Reynolds Kitchens has convenience sizes to fit 1-3 quart slow cookers as well as 3-8 quart slow cookers.

10 Cons of using crockpot liner bags

Most of the following cons to do with crock pot liner bags are environmental concerns. But there are also the $ cost, use problems, and health factors.

1. Single-use plastic bags

The liners are single-use plastic bags, which concerns environmentally conscious folks. Since they are neither recyclable or reuseable, the liners mean more waste going to landfill or ending up as debris in the marine environment.

2. Non-biodegradable material

Given that these are nylon, they are not biodegradable. No form of nylon is biodegradable. So you can’t compost these if you are concerned about waste going to landfill.

3. Manufacturing footprint

Slow cooker liners are typically made of heat resistant nylon.

Good On You reports that the making of nylon produces greenhouse gas emissions of nitrous oxide. It uses large amounts of water (for cooling of the fibers) and substantial amounts of energy.

This is a downside for those wanting to reduce their environmental footprint.

4. Health concerns

There is the concern of plastic chemicals leaching into the food from the slow cooker liner and that this may harm one’s health.

Slow cooker liners are typically BPA-free. But still, for some, there exists disquiet about the release and risks of non-BPA chemicals of which the risks and specifics are unknown.

5. Plastic melts

Plastics have a softening point. This should not be a problem with the normal use of slow cooker liners. Slow cooker liners, made of heat resistant nylon, are safe up to 400 ºF, which is beyond the heat of a slow cooker.

But, be aware when using these on or near stovetop burners or using the slow cooker liners in oven where the plastic could come into contact with heated elements the plastic could stick and create a clean-up problem.

6. The liner bag might tear and leak

Some people complain of the liners leaking.

What to watch in this case is that using a sharp knife or fork to stir your food could puncture the bag. Cutting up the chicken while in the pot with a liner is not a good idea.

Some foods, such as chicken bones or fish bones, can pierce the liner creating holes allowing the liquid to leak out into the pot.

Shaking or stressing a full bag can also result in rips that cause leakage.

7. Moisture forms underneath the liner

Moisture can form on the bag and drip down into the pot or outside the pot. This doesn’t affect the cooking. It just means you’ll need to wipe out the pot and the surroundings after use. The clean up won’t be entirely effortless but still shouldn’t entail soaking and scrubbing.

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10 Pros and Cons of Slow Cooker Liners (aka crock pot liners). What to know before you buy slow cooker liners, aka crock pot liners. Weigh up the conveniences vs the costs. Plus step by step on how to use slow cooker liners, which are plastic bags that fit inside, between the food and the pot.

8. Hot spots where the liner sticks to the pot

Not all brands are the same. Be aware that some liner brands require you to put an amount of water in the pot before adding the liner to stop the liner from sticking to the pot.

The humidity from the water prevents hot spots from forming where the liner sticks to the pot.

If for some reason you find the liner has burned onto the surface of the pot, soak the affected area in dishwashing water for a length of time and it should come off.

Another tip is to freeze the pot and then scrape the liner off.

9. Having to spend extra money

When you use slow cooker liners, there is an extra cost for cooking that meal.

The non-reusability of these means there’s an extra cost to every meal you make with the slow cooker. 

10. Another item for your list

Using and being dependent upon slow cooker liners, to some people, means worrying about another item to have to replenish and store. If you’re someone who likes to simplify your life and have fewer demands, this has relevance.

Are slow cooker plastic liners safe?

The nylon liners are safe to use with temperatures up to 400 ºF (204 ºC).

Some people get nervous about heating food in plastic. Especially, disposable plastic that is often cheaply made.

Most slow cooker liners on the market are labeled BPA-free, which is a good thing. (Bisphenol A, or BPA, is a weak synthetic estrogen.) But, people could rightly wonder: What else do they contain that might be harmful and that we are yet to discover?

A 2011 study found that almost all plastic products they sampled, BPA-free included, leached detectable quantities of chemicals that imitate naturally occurring estrogen in our bodies.

Some people may want to reduce their exposure to chemicals in plastics, for example, in regard to the risk of breast cancer.

Alternatives – What can you use instead of slow cooker bags?

If you’re thinking, what can you use instead of slow cooker bags, here are some options…

A reusable silicone slow cooker insert

Mrs V‘s brand of silicone slow cooker liner is a reusable insert you place inside the crock pot before adding ingredients. The idea means you save on buying single-use plastic.

While the design helps with the cleanup, unlike the Reynolds nylon blend liners, it’s not for storing or freezing meals made in the crock pot.

Update: this option of the silicone slow cooker insert by Mrs V seems to be no longer available.

Choose a pot that’s easy to clean

A ceramic inner pot is easier to clean than one with an aluminum inner. Ceramic inner pots are 100% natural with a tough lead-free glaze, which helps make cleaning the pot a breeze. I share a method in below.

A slow cooker with a nonstick inner pot is also very easy to clean. The downside is that the nonstick coating wears away with use and exposes an aluminum base, which is not such a breeze to clean, nor a healthy option.

I wrote about the different inserts in my article on the best slow cookers.

Put it in the dishwasher

If the inner pot is dishwasher safe, you can put it in the dishwasher, which makes cleaning the cookware a ‘set and forget’ approach.

The ceramic inner pots are typically dishwasher safe.

I don’t recommend putting a nonstick inner pot in an automatic dishwasher. I cover the best way to clean this type in my guide on how to care and use nonstick cookware.

DIY crock pot liner

Line the inner pot in a DIY crock pot liner style: Options include lining the inner pot with baking paper or aluminum foil. The liquid would leak through into the pot but lining the pot this way should at least prevent the burned-on rim that forms around the top of the meal and which is generally the most stubborn to clean.

Oil the inner pot

Try spraying or wiping the sides and bottom of your slow cooker with some cooking oil. Some people find that this works.


Final thoughts

I can see why people enjoy using slow cooker liners. They benefit them by way of convenience and comfort.

If you are environmentally conscious in the kitchen, you might consider using these occasionally, not regularly.

Personally, I don’t use slow cooker liners. I have a slow cooker with a ceramic bowl, which I find easy enough to clean using this method…

  • Soak your pot straight away after you’ve removed the contents. Add enough warm water into your pot to fill it to just above the mark of the food residue. Add some dishwashing liquid. Let this sit for half an hour or so, and then wallah! The residue should easily come away with a soft sponge. Follow this with a rinse and a dry, and you’re done!

I love using my slow cooker because it means I only have one pot to clean and it’s a healthy choice for home-cooked meals.


Good On You: Material Guide Nylon | FDA: BPA Use In Food Contact Application | The Facts (Single-Use Plastic) | 500 Slow-Cooker Dishes

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