A slow cooker is the easiest appliance in the kitchen to use and one of the more annoying to clean, because food sits against hot ceramic for eight hours and bonds to it. Liners solve that at the source rather than after the fact, and they turn out to be useful for more than cleanup once you have them in the drawer. The rest of the accessories in this category are smaller wins by comparison. Our roundup of slow cookers under fifty dollars covers the cookers themselves.
Quick Verdict
Disposable liners are the accessory worth buying first, since they remove the worst part of using a slow cooker entirely. A silicone lid gasket, a decent set of storage containers, and a probe thermometer cover most of what else is genuinely useful.
Key Takeaways
- Liners remove the cleanup problem rather than easing it.
- They also work for marinating and for soup, not just roasts.
- Reusable silicone liners cut waste and need washing themselves.
- Storage containers matter more than most cooker accessories.
- Most other accessories solve smaller problems than they claim.
How We Picked
Accessories are grouped by which part of using a slow cooker they actually improve, since the appliance itself needs very little help. Cleanup is weighted heaviest, because that is the friction that stops people using a cooker they already own.
Selections reflect materials and documented compatibility. Descriptions come from product research except where personal use is stated directly.
1. Disposable Slow Cooker Liners, Best Overall
Why It Stands Out
A liner sits between the food and the ceramic, so what would have baked onto the insert lifts out instead. The insert usually comes out needing a rinse rather than a soak.
That changes the maths on using the cooker at all, since the effort at the end is what people remember when deciding whether to bother next time.
Worth Knowing
Liners are single use, so there is a running cost and a waste consideration. For most people that is a fair trade against soaking a heavy ceramic insert.
Check the size against your cooker, since a liner too small does not reach the rim and one too large bunches under the lid. Our guide to cleaning a slow cooker covers what to do without one.
This suits almost everyone. Skip it if disposables are something you avoid.
2. Reusable Silicone Liners, Best for Waste
Why It Stands Out
Silicone liners do the same job repeatedly, which removes the running cost and the packet of plastic bags from the equation.
They also sit more firmly against the insert than a bag does, so nothing shifts when you stir.
Worth Knowing
These need washing, which returns some of the cleanup you were avoiding. It is easier than scrubbing ceramic and it is not nothing.
Fit is model specific, so a generic silicone liner may not seat properly in your insert. Measure before buying.
This suits regular use and low-waste kitchens. Skip it if avoiding washing up is the whole point.
3. A Divider Insert, Best for Two Dishes
Why It Stands Out
A divider splits the insert so two dishes cook at once, which suits cooking a main and a side without running the oven as well.
It also lets you make a smaller quantity in a large cooker without the food spreading too thin.
Worth Knowing
Both sides cook at the same temperature for the same time, so the two dishes have to suit identical conditions. That is a real constraint.
Dividers are sized to specific inserts, and a poor fit lets liquid pass between the sides. Our note on how full a slow cooker should be covers portioning.
This suits cooking two things at once. Skip it if you cook one dish at a time.
4. Storage Containers, Best for Leftovers
Why It Stands Out
Slow cookers produce more food than one sitting, so where the surplus goes is part of using one. Containers that stack and seal properly are what make that painless.
Glass handles hot food better than thin plastic and does not stain from tomato or turmeric.
Worth Knowing
Portion-sized containers beat one large one, since reheating a single serving is the actual use case rather than reheating the lot.
Let food cool before sealing, as trapped steam turns into condensation and dilutes what is inside. Our roundup of food storage containers covers the options.
This suits anyone cooking more than they eat at once. Skip it only if you already own good containers.
5. A Probe Thermometer, Best for Meat
Why It Stands Out
Slow cooking is forgiving on time and not on doneness, and a probe removes the guesswork on larger cuts where a poke test tells you very little.
It also catches the case where a cooker runs hotter or cooler than its dial suggests.
Worth Knowing
Lifting the lid to check drops the temperature and adds time, so a leave-in probe with an external readout beats an instant-read here.
Probes need placing in the thickest part away from bone to read accurately. Our roundup of meat thermometers covers the types.
This suits anyone cooking large cuts. Skip it for soups and stews.
6. A Replacement Lid Gasket or Seal, Best Small Fix
Why It Stands Out
A lid that no longer seats properly lets steam escape, which changes how much liquid ends up in the finished dish. A cheap gasket restores that on an older cooker.
It is also the least expensive thing here by a wide margin.
Worth Knowing
Not every cooker has a serviceable gasket, and many lids simply rest on the rim by design. Check yours before assuming there is one to replace.
A warped or chipped lid is a different problem that a gasket will not fix. Our note on why slow cooker food goes watery covers liquid levels.
This suits older cookers losing steam. Skip it if your lid seats cleanly.
Slow Cooker Accessories at a Glance
| Accessory | Solves | Running cost | Worth it? |
|---|---|---|---|
| Disposable liners | Cleanup entirely | Per use | Yes, first |
| Silicone liners | Cleanup, less waste | None | If you use it often |
| Divider insert | Two dishes at once | None | Situational |
| Storage containers | Leftovers | None | Yes |
| Probe thermometer | Doneness on meat | None | For large cuts |
| Lid gasket | Steam escaping | None | Older cookers only |
How I Use Liners
I have had the same basic slow cooker for over five years and it comes out a couple of times a month. I use liners mostly every time, which after that long is a habit rather than a decision.
Cleanliness is the main reason. The insert comes out needing a rinse rather than a soak, and on a heavy ceramic pot that difference is what keeps the appliance in rotation instead of in a cupboard.
Two uses I did not expect when I started. Liners help with marinating chicken, since you can marinate in the liner and then cook in it without transferring anything or washing a second dish. And they make soup cleanup considerably easier, which surprised me because soup feels like it should rinse away on its own. It does not always.
Nothing about the cooker itself annoys me, which after five years I take as a decent sign. It is a simple quality product, and liners handle the one part of using it that would otherwise be a chore.
What I cannot compare is reusable silicone liners, dividers, or gaskets, since I have not used them. Those sections are research rather than something I have run alongside what I use.
What to Look For in Liners
Does the size match your insert?
A liner too small will not reach the rim and one too large bunches under the lid. Most are sold by cooker capacity, so check yours rather than buying generically.
Is it rated for the temperature?
Proper cooker liners are made for sustained heat. Ordinary oven bags and food storage bags are not the same product and should not be substituted.
Disposable or reusable?
Disposable removes cleanup entirely at a running cost. Reusable removes the cost and gives back some washing. Choose based on which of those bothers you more.
What else are you cooking?
Liners are not only for roasts. Marinating and soups both benefit, which is worth knowing before deciding they are a niche product.
Liners or Just Cleaning It?
The case for liners
Cleanup is the friction that decides whether a slow cooker gets used. Removing it entirely, for pennies per use, is the highest-value thing you can buy for one.
The case against
Single-use plastic every time, and a well-cared-for insert is not that difficult to clean if you soak it promptly. If waste bothers you more than washing up does, silicone or nothing is the honest answer. Our comparison of slow cookers and Dutch ovens covers a different cleanup profile.
Common Accessory Mistakes to Avoid
Using an ordinary plastic bag
Food storage and freezer bags are not made for hours of sustained heat. Use liners sold for slow cookers specifically.
Buying the wrong liner size
Capacity matters. Too small leaves the ceramic exposed where food splashes; too large gathers under the lid and interferes with the seal.
Sealing hot leftovers
Trapped steam becomes condensation and waters down what you cooked. Let food cool before the lid goes on.
Buying accessories before liners
Dividers, racks, and gadgets solve smaller problems. Cleanup is the one that stops people using the cooker, so start there. Our note on leaving a slow cooker on all day covers the other common worry.
Recommended Reading
See our note on what to cook in a slow cooker, our guide to whether frozen meat is safe in a slow cooker, our programmable slow cooker picks, and a note on whether a slow cooker suits one person.
Slow Cooker Liner FAQ
Are slow cooker liners safe?
Liners sold specifically for slow cookers are made for sustained cooking temperatures and are used as intended when kept within the cooker’s normal range. Ordinary food storage or freezer bags are a different product and are not suitable substitutes.
Do liners actually save much cleanup?
Yes, and it is the difference between a rinse and a soak. Food that would bond to hot ceramic over eight hours lifts out with the liner instead, which on a heavy insert is the part people dread.
Can I use a liner for soup?
You can, and it helps more than you might expect. Soup leaves a film that does not always rinse away cleanly, so a liner saves work there as well as with roasts and stews.
Can I marinate in the liner?
That works well, since you can marinate and then cook in the same liner without transferring anything or washing a separate dish. It is one of the more useful things liners do beyond cleanup.
Are reusable silicone liners better?
They remove the running cost and the waste, and they need washing themselves, which gives back part of what you were avoiding. Fit is model specific, so check the shape against your insert rather than buying a generic one.
What size liner do I need?
Match it to your cooker’s capacity rather than guessing. Too small leaves ceramic exposed where food splashes, and too large bunches under the lid and interferes with how it seats.
Which accessory should I buy first?
Liners, because cleanup is the friction that decides whether the cooker gets used. Storage containers come second, since a slow cooker produces more food than one sitting and the leftovers need somewhere sensible to go.
Do I need a thermometer for a slow cooker?
For soups and stews, no. For large cuts of meat where doneness matters and a poke test tells you little, a leave-in probe with an external readout is worth having, since lifting the lid to check costs heat and time.
