How do you cook potato soup in a slow cooker?

When I make potato soup in the slow cooker, I start by adding diced potatoes, onions, garlic, and broth directly into the pot. I let it cook low and slow, which allows the flavors to blend and the potatoes to become tender. The slow cooker makes it so easy—I don’t have to constantly stir or worry about it sticking. Once the potatoes are soft, I puree the soup for a creamy texture and stir in sour cream before serving.

How long does it take to heat mashed potatoes in a slow cooker?

From my experience, if you’re using pre-cooked mashed potatoes, heating them in a slow cooker takes about 1 to 2 hours on low. I usually add a little broth or milk to prevent them from drying out and stir occasionally. For raw potatoes cooked into a soup, it naturally takes longer—around 3–4 hours on high or 6–10 hours on low.

How long to slow cook potatoes?

When I cook raw potatoes in a soup like this, I’ve found they become perfectly tender in about 6–10 hours on low or 3–4 hours on high. The key is cutting them into even pieces so they cook evenly and checking toward the end for doneness. The slow cooker makes them soft and flavorful without me having to watch the pot.

How to adjust soup recipe for slow cooker?

If I need to adjust the recipe, I usually tweak the liquid first—more broth for a thinner soup, or a bit less for a thicker, creamier texture. You can also adjust cooking times if your slow cooker runs hot or slow. For flavor, I sometimes add extra garlic, herbs, or cheese near the end to taste. The beauty of slow cooker recipes is their flexibility—you can make it your own without losing that comforting base flavor.

Slow Cooker Garlic Mashed Potato Soup Recipe

Description

Enjoy a warm, comforting Slow Cooker Garlic Mashed Potato Soup made with tender russet potatoes, savory garlic, sweet onions, creamy sour cream, rich cheddar, and optional crispy bacon—perfect for cozy meals any day of the week.

Ingredients

1/2 yellow onion, diced

1-2 teaspoons minced garlic, 3-4 cloves, to taste

2 large russet, baking potatoes, peeled and diced

32 ounces low-sodium chicken or vegetable north

2 tablespoons nonfat sour cream

4 scallions, thinly sliced, or use chives

1/3 cup shredded 50% reduced-fat cheddar cheese

2 strips turkey, pork, or vegetarian bacon, cooked and crumbled (optional)

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Instructions

Add the onions, garlic, potatoes, and broth to the slow cooker and cook on low for 6-10 hours or on high for 3-4 hours. (Slow cooker cooking times may vary–get to know your slow cooker and, if necessary, adjust cooking times accordingly.)

Thirty minutes before serving, use an immersion blender or standing blender to puree the soup, then add the sour cream. (I returned mine to the slow cooker for that last 30 minutes to continue to cook and thicken.)

Serve topped with the scallions, cheese, bacon, and extra sour cream, if desired.

Prep Time: 15 min
Cook Time: 3.5 hours
Category: Soup
Method: Slow Cooker
Cuisine: Homamade