KOOC Electric Roaster Liners, 18" x 34

These KOOC electric roaster liners suit cooks who use a large slow cooker for family meals, potlucks, or holiday batches and would rather spend less time scrubbing afterward.

Each disposable liner measures 18" x 34" and is designed for 16–22 qt oval, round, and rectangular cookers. That broad shape coverage may help if your kitchen has a different style of large cooker than a standard oval model.

They’re made from a BPA-free nylon blend and are listed as leakproof and heat resistant up to 400°F. The main tradeoff is straightforward: these are single-use liners, not a reusable way to protect the cooking pot.

Key points

The practical benefit is keeping much of the cooking residue off the cooker itself. For a large pot of stew at a gathering, that can mean lifting out the used liner after serving instead of tackling a pot coated with sauce and food residue. The liners are also described as suitable for soups, stews, and casseroles, so their role is kitchen cleanup rather than adding a cooking feature.

The stated fit range is 16–22 qt, with a size of 18" x 34". It suits you if your cooker falls within that range and you value a simpler cleanup routine. It might not be a great match if you want reusable accessories or need a liner for a cooker outside the listed capacity range. If your cooker’s capacity is unknown, assuming a fit without that measurement is a gamble.

Care & maintenance

There are no washing or storage instructions because these liners are disposable. For safe use, follow your appliance’s instructions and keep the liner within the stated limit of 400°F. The product information specifically says to avoid direct oven or open-flame use, don’t treat the heat-resistance rating as approval for either.

A liner can make cleanup easier, but it doesn’t replace the cooker’s normal operating guidance. Set up the appliance as directed, and use the liner only for the slow-cooker application described. That distinction matters if you’re comparing these with reusable inserts or oven-safe cooking bags, which may be intended for different handling and cooking methods.

Practical tips

Before opening the pack, check that your cooker is in the 16–22 qt range and that its shape is oval, round, or rectangular. The liners are designed for most cookers in those sizes and shapes, but the product details don’t promise a fit for every individual model. For a potluck, place the liner in the cooker before adding ingredients so it can help contain residue throughout cooking and serving.

There are 10 liners in the pack, which gives you a disposable option for multiple cooking occasions. They make more sense when fast cleanup is a priority than when minimizing single-use kitchen items is your main concern. The listed heat limit also makes this a slow-cooker accessory—not a general-purpose liner for transferring a dish to an oven or using it over an open flame.

Practical doubts

Will these fit a 20 qt oval cooker? The listed size range includes 20 qt cookers, and oval models are among the stated shapes. Individual model fit is not guaranteed.

Can I use a liner in the oven? No. The product information says to avoid direct oven and open-flame use, despite the 400°F heat-resistance rating.

Are the liners reusable? They’re described as disposable, so they’re intended for one-time use rather than washing and reusing.

When it makes sense

Choose these if you regularly cook large slow-cooker meals in a 16–22 qt cooker and want to cut down on scrubbing after serving. They’re less suitable if you prefer reusable cookware accessories, need oven use, or have a cooker outside the stated size range. Compared with simply cooking in the bare pot, the payoff is convenience at cleanup time, the cost of that convenience is using a disposable liner for each cooking occasion.