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Soups · Slow Cooker

Crock Pot Potato Soup

G By Our Grannies' Kitchen Updated Jul 2026 4.8 (87 ratings)
Crock Pot Potato Soup
Crock Pot Potato Soup
4.8 / 5
6 servings

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Ingredients

Tick each one off as you go.

  • 3 lb (1.4 kg) floury potatoes (russets or Maris Piper), peeled and cut into 2 cm chunks
  • 1 large onion, finely chopped
  • 3 garlic cloves, minced
  • 1 liter (4 cups) chicken stock
  • 1 tsp dried thyme
  • 0.5 tsp black pepper, plus more to taste
  • 200 g smoked streaky bacon (about 8 slices)
  • ¾ cup (180 g) full-fat cream cheese, cubed, at room temperature
  • 1 cup (250 ml) whole milk (or evaporated milk for extra insurance against splitting)
  • 1 cup (100 g) mature cheddar, grated from a block, plus extra to serve
  • 4 green onions, sliced, to serve
  • Salt, to taste

Method

  1. Fry. Fry the bacon in a pan until properly crisp, then drain it on paper towels and crumble it. Spoon a little of the bacon fat into the slow cooker — that is free flavor — and keep the bacon itself back for serving. Stirred in at the start it just goes soggy, and nobody thanks you for soggy bacon.
  2. Load. Tip the potatoes, onion, garlic, thyme and pepper into the slow cooker. Pour over the stock — it will not quite cover the potatoes, and that is right. A crock pot barely loses any liquid, so it needs far less than a stovetop soup or you end up with dishwater.
  3. Cook. Lid on. Cook on Low for 6 to 7 hours (or High for 3 to 3.5) until the potatoes crush against the side of the pot with no argument. Leave the lid alone — every peek lets the heat out and costs you another 20 to 30 minutes.
  4. Mash. Take a potato masher and crush about a third of the potatoes right in the pot, leaving the rest in soft chunks. This is what thickens the soup — no flour, no slurry. Mash more if you like it thick as porridge, less if you like it brothy.
  5. Enrich. Stir in the cream cheese and the milk. Lid back on, Low, for a final 30 minutes, then stir well until the cream cheese has melted in smoothly. Off the heat, stir in the grated cheddar until it disappears. Taste, and salt it properly — potatoes drink up salt.
  6. Serve. Ladle into deep bowls and top with the crisp bacon, green onions and a little extra cheddar. Leftovers keep in the fridge for 3 days; reheat gently on the stovetop without boiling, or the dairy will sulk.
Granny's tip

Cube the cream cheese and let it sit on the counter while the soup finishes. Room-temperature cream cheese melts in smooth as you like; cold from the fridge it sulks in stubborn white lumps.

Tips for a creamy crock

Grate the cheese from a block

Pre-shredded cheese is coated in anticaking agents that never fully melt and leave the soup grainy. Two minutes with a box grater buys you a silky finish.

Keep the lid on

A slow cooker builds gentle heat over hours, and it all escapes the moment you lift the lid. Each peek adds 20 to 30 minutes to the cook. Trust the pot until the last hour.

The mash is your thickener

Floury potatoes crushed into the broth give better body than any flour or packet. If you want it thicker still, stir in a cornstarch slurry at the end and cook on High, lid off, for 15 to 20 minutes.

Questions, answered

Can I use frozen hash browns instead of fresh potatoes?

You can — a bag of plain frozen diced potatoes or hash browns goes straight in, no thawing needed, and cooks in about 6 hours on Low. Granny would mutter about it, but she muttered about sliced bread too. Fresh floury potatoes do give a better texture for the mash.

Why did my potato soup curdle in the crock pot?

The dairy went in too early. Milk, cream cheese and cheddar cannot take hours of heat — they split and turn grainy. Stir them in for the last 30 minutes only, on Low. Evaporated milk is the most heat-stable choice if your pot runs hot.

What are the best potatoes for crock pot potato soup?

Floury ones — russets in the US, Maris Piper or King Edward in the UK. They collapse into the broth and thicken it naturally when mashed. Waxy salad potatoes hold their shape and leave you with thin soup and firm lumps.

Can I make it without cream cheese?

Yes. Swap it for 250 ml of heavy cream or a can of evaporated milk, added in the same final 30 minutes. Cream cheese gives that slight tang and extra body, but the soup is still lovely without it.

Can I freeze potato soup?

Better not, once the dairy is in — potatoes and milk both turn grainy and watery in the freezer. It keeps happily in the fridge for 3 days. If you want to freeze, do it before the dairy stage, then add the cream cheese, milk and cheddar when reheating.

From Granny's Pantry

The know-how behind this recipe:

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