Crock Pot Mashed Potatoes

Crock Pot Mashed Potatoes: Yes, you really can make them entirely in your slow cooker; no boiling or draining required. Slice russet or Yukon Gold potatoes, add butter, cream cheese, and milk, and cook on high for 4-5 hours until fork-tender, then mash right in the pot.

I made three separate test batches to work out the details below, including one surprising discovery about why a smaller crock pot can actually take longer than a bigger one, even on a higher setting.

Perfect for holidays, Sunday suppers, or any night when you need comfort in a bowl, without dirtying every dish in your kitchen.

Not sure this is the mashed potato recipe you’re after? This version is smooth, creamy, and made hands-off in the slow cooker with cream cheese for extra tang. If you want a chunkier, skin-on mash you can make in about 20 minutes for a smaller crowd, try my Rustic Mashed Potatoes for Two. If you’re avoiding cream cheese, or want a make-ahead casserole you can bake in the oven, my Twice Baked Mashed Potatoes is built exactly for that. And if you want a savory, restaurant-style twist, don’t miss my Pancetta and Rosemary Mashed Potatoes.

Why this recipe works

• Starch does the heavy lifting - Russet potatoes are high in starch, which breaks down during the long, gentle cook, giving you a fluffy mash without a stand mixer’s worth of effort.
• Cream cheese balances the fat - Butter and milk add richness, but cream cheese’s acidity keeps the mash from tasting flat or heavy; it’s also the reason you can freeze any leftover mashed potatoes.
• Low, steady heat means no scorching - Unlike a stovetop pot that needs constant attention, a slow cooker’s gentle heat lets the potatoes break down evenly without sticking on the bottom, as long as you stir occasionally (more on that in my testing notes below).

How to make the best crock pot mashed potatoes

1. Spray the bowl of your crock pot with non-stick cooking spray. Peel and slice the potatoes into even, half-inch slices, then add them to the crock pot. Keeping the slices consistent matters more than it sounds; uneven slices lead to uneven cooking, and thinner pieces will turn to mush while thicker ones remain firm.
2. Add butter, cream cheese, milk, salt, pepper, and garlic powder and stir.

3. Cook on high for 4-5 hours or until the potatoes are fork-tender and can be easily mashed against the side of the crock pot with a fork. Stir every 1-2 hours to keep the potatoes coated in liquid, help them cook evenly, and prevent sticking; on my test batch, the potatoes cooked on high started sticking and browning a bit right around the 2-hour mark without a stir.
4. Mash the potatoes using a potato masher for the best results, or an electric mixer if you prefer. Taste and season with additional salt and pepper if needed, and feel free to add additional milk or heavy cream if you prefer creamier potatoes.
5. Serve warm.

Recipe testing notes

I made three separate batches of this recipe, which, for someone like me who loves mashed potatoes, wasn’t a chore at all, to nail down the details before sharing it with you. A couple of things surprised me enough that I want to pass them along.

• Russets vs. Yukon Golds: I ran both varieties side by side, then had my husband and a few friends do a blind taste test. Russets barely edged out the Yukon Golds; they were a touch fluffier and lighter, and everything you expect from a classic mashed potato. Yukon Golds were equally creamy and delicious, and since their skin is so thin, you genuinely don’t need to peel them. Honestly, you can’t go wrong with either one.
• Masher vs. mixer: I tested both. A potato masher left a few small lumps, which I personally like for texture; if you want them perfectly smooth, reach for a potato ricer instead. An electric mixer does break up lumps better, but there’s a fine line between fluffy and gluey. Mix for under a minute and stop as soon as they’re smooth.
• Small pot vs. big pot: Here’s the one that really surprised me. While testing, I had Yukon Golds going in a smaller 2.5-quart crock pot on high and Russets in a larger 4-quart slow cooker on low, and the smaller pot on the “higher” setting actually took longer to finish.

• It turns out fill level matters more than the dial: slow cookers heat from the sides, so a pot that’s packed close to the brim has a dense center that’s harder for the heat to reach, while a comfortably filled pot (about half to two-thirds full) heats more evenly no matter the setting. If your crock pot is on the smaller side, don’t be surprised if it needs more time than the recipe states; go by fork-tenderness, not the clock.

What to serve with crock pot mashed potatoes

Mashed potatoes go with just about everything:

• Main dish: Slow Cooker Country Style Ribs with Vidalia Onion Gravy, Creamy Mushroom Pork Chops, Pan-Seared Turkey Cutlets with Gravy, or Country-Style Steak
• Topped with: Turkey Neck Gravy, Sausage Gravy, or Southern Tomato Gravy
• Thanksgiving: Smoked Turkey and Traditional Southern Cornbread Dressing

Storing and reheating

• Store leftovers in an airtight container for 3-4 days in the fridge.
• Freeze in an airtight container for up to 3 months. Mashed potatoes made with cream cheese can be frozen without any loss of quality. Just be sure to thaw before reheating.
• Reheat in the microwave in 30-60 second intervals, stirring in between, until hot.
• If reheating a crock pot full of refrigerated potatoes, use the Low or High setting with occasional stirring rather than Warm; USDA guidance says slow cookers shouldn’t be used to reheat cold food on Warm, since it can take too long to pass through the temperature danger zone (40°F-140°F). Reheat until an instant-read thermometer reads 165°F, then switch to Warm to hold.
• Once they’re genuinely back up to temperature, they can safely hold on Warm for an afternoon, as long as the setting keeps them at 140°F or above; check with an instant-read thermometer, since Warm settings vary quite a bit by brand.

Supper and then some (reimagining leftovers)

• Potato and Cheese Fritters - Mix in a little shredded cheese and an egg, shape into patties and pan-fry until golden.
• Shepherd’s pie topping - Use as a delicious lid for your favorite meat and veggie casserole.
• Twice-baked potato casserole - Add bacon, cheese, and sour cream and bake.

Make it ahead (planning and prep tips)

This is one of the easiest holiday side dishes to make ahead, and I tested the timing myself so you don’t have to guess:

• Make the recipe up to two days in advance and refrigerate right in the crock pot insert; no extra dish to wash.
• The next day, reheat on Low, stirring every 30 minutes or so and adding a splash of warm milk or heavy cream as needed, until they reach 165°F. Then switch to Warm and hold at 140°F+ until serving.
• Perfect for Thanksgiving: if you reheat them by noon, they can safely hold through a 2 or 3 o’clock dinner.

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