How To Keep Mashed Potatoes Warm With A Slow Cooker

Because cold potatoes are the worst.

Lots of side dishes are delicious when eaten at room temperature. Mashed potatoes are not one of those dishes. They need to be smooth, creamy, and most of all, piping hot. Yes, gravy can help with that, but it's also a good idea to make sure your potatoes don't get cold by the time people come back for second helpings.

This is where your slow cooker comes in. This handy kitchen appliance isn't necessary to make mashed potatoes (although you can make them in a slow cooker), but it's the best way to make sure they stay hot, especially if you're feeding a big crowd.

mashed potatoes
Dotdash Meredith

How to Keep Mashed Potatoes Warm

It's not quite as simple as dumping your potatoes into the slow cooker insert and plugging it in—that could actually be a food safety hazard. Follow these steps for the best results.

mashed potatoes in a slow cooker

Grease the insert

Keep the potatoes from sticking to the slow cooker insert by coating it with an even layer of butter or cooking spray. This trick also helps to make cleaning the insert an easier task.

Start with warm potatoes

Mashed potatoes are a great make-ahead dish, but do not transfer them straight from the refrigerator into the slow cooker. To prevent the growth of harmful bacteria, mashed potatoes should be served at 140°F or higher. A slow cooker might not reach this temperature quickly enough if you're starting with cold potatoes. Always reheat the mashed potatoes with milk, broth, or a few pats of butter in the oven or in the microwave before transferring them to the slow cooker. Make sure to cover the potatoes during warming so moisture doesn't escape.

If your leftover potatoes still seem dry, put them in a bowl first and add a few splashes of milk or cream. Give them a quick whip with a hand mixer to make them light and fluffy, and then spoon into your slow cooker.

Keep it on 'low' or 'warm'

The lowest setting of your slow cooker will keep the potatoes nice and warm without drying them out. If you notice that they are getting a little dry, loosen them up by stirring in an extra splash of milk or cream or a few tablespoons of butter. Potatoes that are in the slow cooker for a long time can start to brown around the edges, so make sure to check on them regularly.

Enjoy your perfect potatoes

Now that you know how to keep your mashed potatoes at their peak all dinner long, try putting a different spin on this favorite side dish. Add bacon and blue cheese for a celebratory steak dinner. Chorizo and green chiles spice things up in this Tex-Mex version. Or go for more classic mashed potatoes flavored with brown butter and herbs.

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  1. Tune into these important food safety tips for cooked potatoes.

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