Slow Cooker Potato Leek Soup
45 Comments Oct 02, 2021
Updated Sep 26, 2025
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Slow Cooker Potato Leek Soup is a cozy classic that delivers rich flavor and creamy texture without needing constant attention or complicated prep.
Why you’ll love this
- Nothing can beat the flavor of leeks, potatoes, and cream together – if you have never tried this soup, you are in for a treat!
- The slow cooker does all the work while you go about your day.
- The leftover Potato Leek soup is something to look forward to!
The Ingredients
- Leeks: Look like giant green onions—be sure to slice and rinse well to remove any hidden grit.
- Salted Butter: Used to cook the leeks, adding rich, caramelized flavor.
- Seasonings: Garlic, salt, pepper, bay leaves, and thyme add depth and balance.
- Yukon Gold Potatoes: Naturally creamy and buttery—perfect for blending into a smooth soup.
- Chicken Broth: Use low sodium if preferred; it forms the base of the soup.
- Heavy Cream: Stirred in at the end for extra richness and velvety texture.
How to Make Potato Leek Soup in the Slow Cooker
- Sauté the leeks until soft and fragrant.
- Add everything to the slow cooker and let it simmer away.
- Blend it up once the potatoes are tender.
- Stir in cream and finish with a simple garnish.
Cook’s Notes & Variations
- Add 8 pieces of cooked and crumbled bacon to the soup with the rest of the ingredients for smokey flavor.
- Use vegetable broth instead of chicken for a vegetarian version.
- Add chopped carrots or celery for more heartiness.
- Don’t over mix the soup or it may become gummy.
- Eat within a few days- for meals with potatoes or cream don’t freeze well.
Best ways to serve:
Top each bowl with snipped chives if desired. Other great toppings are crumbled bacon or sour cream.
For crunch, serve with croutons, saltine crackers, or oyster crackers.
Of course, you’ll want to add a side of bread; we love garlic knots or sourdough bread.
Featured Comment
“Absolutely delicious. My husband called it restaurant quality soup. Will make again!”
– Teri
Slow Cooker Potato Leek Soup Recipe
Potatoes and leeks slow cooked to perfection, blended with a generous amount of cream.
How to Video
Ingredients
- 2 large leeks, sliced
- 3 Tbsp. salted butter
- 2 cloves garlic, minced
- 3 lbs. yukon gold potatoes
- 7 cups chicken broth
- 2 bay leaves
- 3 sprigs fresh thyme, or 1 tsp. dried leaf thyme (not ground)
- 1 1/2 tsp. salt
- 1/2 tsp. black pepper
- 1 1/2 cups heavy cream
- fresh chives, chopped (garnish)
Instructions
- Slice the leeks, discarding the thick green pieces that are at the ends. Add to a large skillet with the butter and garlic and cook over medium-high heat until the leeks are softened.
- Add to the crock pot along with the potatoes (peeled if you prefer), bay leaves, thyme, salt and pepper.
- Add the chicken broth and close the lid. Cook on high for 5 hours or low for 8 hours.
- Once the potatoes have softened enough remove the thyme (if using fresh sprigs) and bay leaves. Use an immersion blender (or food processor or blender) to blend the soup. DO NOT over blend. If you are using a food processer or blender, you will have to blend the soup in small batches.
- Add the cream, blend again a little, then top with chives for garnish. Serve hot with crusty bread.
Nutrition
Calories: 348kcal | Carbohydrates: 35g | Protein: 6g | Fat: 21g | Saturated Fat: 13g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 1g | Cholesterol: 72mg | Sodium: 1221mg | Potassium: 963mg | Fiber: 4g | Sugar: 2g | Vitamin A: 1186IU | Vitamin C: 52mg | Calcium: 80mg | Iron: 2mg
Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.
Made this recipe? Leave a comment below!
More Potato Soup Recipes:
- With a creamy, cheesy base, Crack Potato Soup is packed with crispy bacon, tender potatoes, and ranch seasoning for a comforting bowl of flavor.
- Rich and hearty, Slow Cooker Baked Potato Soup brings all the flavors of a loaded baked potato into one warm and satisfying dish.
- Featuring tender chunks of beef and potatoes in a flavorful broth, Steak and Potato Soup is a hearty option for any meal.
- Inspired by a restaurant favorite, Potato Cheese Soup delivers a velvety texture with a rich cheese flavor in every bite.
- Perfect for using up leftover ham, Slow Cooker Ham and Potato Soup is a creamy, satisfying meal with a comforting balance of flavors.
When you say not to overblend, would you think that 30 seconds in a blender on the west setting would be sufficient?
Blend until it’s just the right consistency, do it any more and you may have glue. 30 Seconds may be too long.
Got it. Thank you!
Salted or unsalted butter for the leeks?
It should be salted. I apologize for the confusion. Though you can use unsalted if that’s all you have.
Do you mean to make it vegan? It already is vegetarian
Not with chicken broth. 🙂
This was an easy to make recipe. I did substitute some turnips for some of the potatoes and omitted the bay. It was gobbled up quite quickly even by a picky 5 year old.
Delicious as written. To lighten it up, I used half and half and it was still terrific. Thanks for the great recipe.
I would recommend starting with half the amount of cream the recipe calls for and add more to taste.
I did a 1/2 batch and used 3 cups chicken bone broth + water in till it covered veggies in pot. Turned out fantastic!
Do I cook the potatoes whole in the crockpot or cut first?
If they are on the small size you can leave them whole, or cut them in half or quarter if they are large.
Excellent and easy recipe! I started too late in the day so made in on the stovetop instead of the crock pot, this is definitely a keeper.
Yukon potatoes, leeks, what is not to like. Thanks for
this lovely recipe.
K
Any tips on adding a protein source like TOFU? I try to make non-meat meals for a friend. She eats eggs though.
Thanks.