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Slow Cooker Potato Leek Soup Recipe

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4.6 from 60 reviews

This comforting Slow Cooker Potato Leek Soup is a creamy and flavorful dish made with tender leeks, Yukon gold potatoes, and a touch of fresh herbs. Slow-cooked to perfection, it offers a rich, velvety texture ideal for a cozy meal served with crusty bread.

  • Total Time: 5 hours 20 minutes
  • Yield: 6 servings

Ingredients

Vegetables

  • 2 large leeks, sliced
  • 3 lbs. Yukon gold potatoes, peeled if preferred
  • 2 cloves garlic, minced
  • fresh chives, chopped (for garnish)

Dairy

  • 3 Tbsp. salted butter
  • 1 1/2 cups heavy cream

Herbs and Spices

  • 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

Liquids

  • 7 cups chicken broth

Instructions

  1. Sauté leeks and garlic: Slice the leeks, discarding the thick green ends. Heat butter in a large skillet over medium-high heat, add sliced leeks and minced garlic, and cook until the leeks are softened but not browned.
  2. Transfer ingredients to slow cooker: Add the sautéed leeks and garlic to the slow cooker along with peeled potatoes, bay leaves, thyme, salt, and pepper.
  3. Add broth and cook: Pour in the chicken broth, cover with the lid, and cook on high for 5 hours or on low for 8 hours until the potatoes are tender.
  4. Remove herbs and blend soup: Remove the fresh thyme sprigs and bay leaves. Blend the soup with an immersion blender until smooth but not over blended. Alternatively, blend in batches using a food processor or blender.
  5. Add cream and finish blending: Stir in the heavy cream and blend gently again just to combine the soup smoothly.
  6. Serve: Ladle soup into bowls and garnish with chopped fresh chives. Serve hot with crusty bread on the side.

Notes

  • Peeling the potatoes is optional depending on your preference for texture.
  • You can substitute vegetable broth to make this recipe vegetarian.
  • If you prefer a thinner soup, add additional broth during blending.
  • Use dried thyme if fresh is unavailable but reduce quantity to 1 teaspoon as indicated.
  • Be careful not to over-blend to maintain a creamy but slightly textured soup.
  • For a richer flavor, use unsalted butter and adjust salt accordingly.
  • Author: Millie
  • Prep Time: 20 minutes
  • Cook Time: 5 hours
  • Category: Soup
  • Method: Slow Cooking
  • Cuisine: American