This warm and cozy Crockpot Potato Leek Soup is perfect for chilly days! It’s creamy, hearty, and made with simple ingredients like potatoes and leeks—easy peasy!
I love just tossing everything into the Crockpot and letting it do all the work. Plus, the smell while it cooks is heavenly! Who could resist a bowl of this deliciousness? 😊
Key Ingredients & Substitutions
Leeks: These add a mild onion-like flavor that’s perfect for this soup. If you can’t find leeks, try using shallots or green onions for a similar taste.
Potatoes: Yukon Gold potatoes offer creaminess, while Russet potatoes are starchy and fluffy. If you need a low-carb option, cauliflower can be used instead, giving a similar texture when pureed.
Broth: Chicken broth gives a rich flavor, but vegetable broth is great for a meat-free version. You could also make your own broth from vegetable scraps for a fresh taste!
Cream: Heavy cream enriches the soup, but you can use half-and-half for a lighter option or coconut milk for a dairy-free version. Almond milk could work too if you want something really light.
How Do I Get a Smooth and Creamy Texture?
To achieve that wonderful creamy texture, there are two main techniques. You can either use an immersion blender directly in the crockpot, or transfer the soup to a traditional blender in batches. Both methods will yield great results, but don’t rush!
- For the immersion blender, ensure it’s fully submerged while blending to avoid splatters.
- If using a regular blender, let the soup cool a bit before blending to prevent hot splashes; then puree until smooth and return to the crockpot.

How to Make Crockpot Potato Leek Soup
Ingredients You’ll Need:
Fresh Vegetables:
- 4 large leeks (white and light green parts only), cleaned and sliced
- 4 large potatoes, peeled and diced (Russet or Yukon Gold work well)
- 1 medium onion, chopped
- 3 cloves garlic, minced
Liquids and Fats:
- 4 cups chicken broth or vegetable broth
- 1 cup heavy cream or half-and-half
- 3 tablespoons butter
Seasoning and Garnish:
- Salt and black pepper to taste
- 1 teaspoon dried thyme (optional)
- Fresh chives or parsley, chopped (for garnish)
- Crème fraîche or sour cream (optional, for garnish)
Serving:
- Crusty bread, for serving
How Much Time Will You Need?
This delicious soup requires about 20 minutes of prep time, followed by 6-8 hours of slow cooking on low or 3-4 hours on high. After cooking, you’ll need about 15 minutes to blend and heat the soup with cream. Total time from start to finish is about 6.5 to 8.5 hours, depending on your cooking method.
Step-by-Step Instructions:
1. Prepare the Leeks:
Start by cutting off the dark green tops and roots of the leeks. Slice the white and light green parts thinly. Make sure to rinse the leeks thoroughly to remove any grit or dirt, as they can be quite sandy.
2. Dice the Potatoes:
Peel your potatoes and cut them into even chunks. This helps them cook uniformly and makes them easier to blend later.
3. Combine Ingredients in the Crockpot:
In your crockpot, mix together the sliced leeks, diced potatoes, chopped onion, and minced garlic. This flavorful base is the heart of your soup!
4. Add Liquids and Seasonings:
Pour in the chicken or vegetable broth, and add the butter, salt, black pepper, and thyme if you’re using it. Give everything a gentle stir to combine all the ingredients well.
5. Cooking Time:
Cover the crockpot and set it to cook on low for 6-8 hours or on high for 3-4 hours. You’ll know it’s ready when the potatoes are very tender.
6. Blend the Soup:
Once the soup is done cooking, use an immersion blender to puree the mixture until it’s smooth right in the crockpot. If you don’t have an immersion blender, carefully transfer the soup in batches to a regular blender. Blend until creamy, then return it to the crockpot.
7. Stir in Cream:
Mix in the heavy cream or half-and-half, then warm the soup on low for another 10-15 minutes, just until heated through.
8. Adjust the Seasoning:
Before serving, taste your soup and adjust the salt and pepper as needed. A little adjustment can make a big difference!
9. Serve with Garnish:
Serve the soup hot, garnished with a drizzle of crème fraîche or sour cream and a sprinkle of fresh chives or parsley. Pair it with some crusty bread for a satisfying meal.
10. Enjoy!
Take a moment to enjoy the comforting aroma, and dig into your delicious Crockpot Potato Leek Soup!
Can I Use Other Types of Potatoes?
Yes! While Russet and Yukon Gold potatoes work best for their creaminess and texture, you can also use red potatoes or even fingerlings. Just be aware that the texture might vary slightly.
How Long Can I Store Leftover Soup?
Leftover soup can be stored in an airtight container in the fridge for up to 3 days. For longer storage, consider freezing it. Just make sure to leave some space in the container for expansion. It can last in the freezer for up to 3 months!
Can I Make This Soup Dairy-Free?
Absolutely! You can substitute the heavy cream with coconut milk or a cashew cream for a rich, dairy-free option. Just make sure to add the non-dairy milk towards the end of cooking for the best flavor.
What Can I Serve with Potato Leek Soup?
This soup pairs wonderfully with crusty bread, a simple salad, or even some grilled cheese sandwiches for a comforting meal. You can also enjoy it as an appetizer before a larger dish!



