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Slow Cooker Potato Leek Soup Recipe

4.7 from 95 reviews

This Slow Cooker Potato Leek Soup is a comforting and creamy classic that combines the delicate flavor of leeks with tender Yukon gold potatoes. Slow-cooked to perfection and finished with rich heavy cream, this soup is easy to prepare and perfect for a cozy meal.

Ingredients

Scale

Vegetables

  • 2 large leeks, sliced (white and light green parts only)
  • 3 lbs. Yukon gold potatoes, peeled if preferred
  • 2 cloves garlic, minced

Dairy

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

Herbs & 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

Garnish

  • Fresh chives, chopped

Instructions

  1. Sauté the leeks and garlic: Slice the leeks, discarding the thick dark green ends. In a large skillet, melt the butter over medium-high heat. Add the sliced leeks and minced garlic, cooking until the leeks are softened and fragrant, about 5-7 minutes.
  2. Prepare the slow cooker: Transfer the sautéed leeks and garlic to the slow cooker. Add the peeled (optional) Yukon gold potatoes, bay leaves, thyme (fresh or dried), salt, and black pepper.
  3. Add broth and cook: Pour in the chicken broth, ensuring all ingredients are submerged. Cover with the slow cooker lid and cook on high for 5 hours or on low for 8 hours, until the potatoes are very tender.
  4. Blend the soup: Remove the fresh thyme sprigs and bay leaves. Using an immersion blender, carefully blend the soup until smooth but still slightly textured. If using a traditional blender or food processor, blend in small batches to avoid overflow.
  5. Finish with cream and garnish: Stir in the heavy cream and blend gently once more to combine. Serve the soup hot, garnished with fresh chopped chives and crusty bread on the side.

Notes

  • You can peel the potatoes for a smoother texture, but leaving the skins on adds nutrients and a rustic feel.
  • If you prefer a thinner soup, add additional chicken broth or water to reach desired consistency.
  • Vegetarian option: substitute vegetable broth for chicken broth and use vegan butter or olive oil.
  • Do not over-blend the soup to maintain a pleasant texture.
  • This soup freezes well; reheat gently on the stove with a splash of cream or broth as needed.

Keywords: potato leek soup, slow cooker soup, creamy potato soup, comfort food, easy soup recipe