Crock Pot 4-Ingredient Potato Soup

Crock Pot 4-Ingredient Potato Soup

This Crock Pot 4-Ingredient Potato Soup is a creamy and comforting recipe, which uses simple pantry staples like potatoes and milk. It’s a straightforward recipe, perfect for easy weeknight meals, ready in about 7 hours and 15 minutes.

Crock Pot 4-Ingredient Potato Soup Ingredients

  • 1 kg potatoes, peeled and evenly diced (about 2.2 lbs)
  • 1 medium brown onion, diced
  • 350 ml whole milk (plus more to taste)
  • 55 g salted butter, divided (about 4 tablespoons)

How To Make Crock Pot 4-Ingredient Potato Soup

  1. Sauté the onions (optional but recommended): In a skillet, melt about 1 tablespoon (15g) of the butter over medium heat. Add the diced onion and cook until softened. Transfer to the crock pot.
  2. Add potatoes to the crock pot: Add the diced potatoes to the slow cooker along with the sautéed onions. Pour in just enough water to cover the potatoes.
  3. Slow cook the potatoes: Cover and cook on HIGH for 3–4 hours or LOW for 6–7 hours, until the potatoes are soft and fork-tender.
  4. Mash and finish: Drain most of the water, reserving about 1 cup. Return the potatoes to the slow cooker. Add the remaining butter and mash the potatoes to your desired texture.
  5. Add milk and adjust consistency: Stir in the milk and some reserved cooking water until the soup reaches your preferred creaminess. Season with salt and pepper to taste. Heat through on LOW for 10–15 more minutes.
  6. Serve: Ladle into bowls and serve hot.
Crock Pot 4-Ingredient Potato Soup
Crock Pot 4-Ingredient Potato Soup

Recipe Tips

  • Do I need to sauté the onions first?
    It’s optional, but sautéing adds better flavor and sweetness to the soup.
  • Can I use cream instead of milk?
    Yes, for a richer soup, swap in heavy cream or half-and-half.
  • How to make it vegetarian or vegan:
    Use plant-based butter and a non-dairy milk like oat or almond milk.
  • How to thicken the soup:
    Mash the potatoes well or use an immersion blender to puree part of the soup.
  • Can I add cheese?
    Yes, shredded cheddar or parmesan stirs in well at the end for extra flavor.

What To Serve With Potato Soup

This cozy potato soup pairs well with:

  • Crusty bread or garlic toast
  • A fresh green salad
  • Roasted broccoli or Brussels sprouts
  • Grilled cheese sandwiches

How To Store Potato Soup

Refrigerate: Store in an airtight container for up to 4 days.
Freeze: Not recommended due to the milk and potato texture, but possible if reheated gently.

4-Ingredient Potato Soup Nutrition Facts (Estimate per serving)

  • Calories: 346kcal
  • Carbohydrates: 50g
  • Protein: 6g
  • Fat: 14g
  • Saturated Fat: 9g
  • Sodium: 220mg
  • Fiber: 4g
  • Sugar: 4g
  • Calcium: 80mg
  • Iron: 2mg

Nutrition information is estimated and may vary based on ingredients and cooking methods used.

FAQs

Can I leave the skins on the potatoes?
Yes, if using thin-skinned potatoes like Yukon Gold or red potatoes.

Can I add broth instead of water?
Absolutely—use vegetable or chicken broth for more flavor.

What type of potatoes work best?
Starchy potatoes like Russets or Yukon Golds create a creamy texture.

Can I make it chunky or smooth?
Yes—just mash less for chunky or use a blender for smooth.

How to reheat leftovers?
Reheat gently on the stovetop or in the microwave, adding milk or water if too thick.

Crock Pot 4-Ingredient Potato Soup

Recipe by Robert Course: SoupsCuisine: AmericanDifficulty: Easy
Servings

4

servings
Prep time

15

minutes
Cooking time

7

hours 
Calories

346

kcal

A creamy, comforting potato soup made with just four basic ingredients—perfect for busy days.

Ingredients

  • 1 kg potatoes, peeled and diced

  • 1 medium brown onion, diced

  • 350 ml whole milk (plus more to taste)

  • 55 g salted butter, divided

Directions

  • Optional: Sauté onion in 1 tbsp butter until soft; transfer to slow cooker.
  • Add diced potatoes and cover with water.
  • Cook on HIGH for 3–4 hours or LOW for 6–7 hours, until potatoes are fork-tender.
  • Drain most water (save 1 cup). Mash potatoes in the slow cooker with remaining butter.
  • Stir in milk and reserved water to reach desired consistency. Season with salt and pepper.
  • Heat through and serve hot.