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Leek and Potato Soup Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4 from 12 reviews
  • Author: Lora
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes (hob), 2 hours (slow cooker), approx. 30 minutes (soup maker including cooking and blending)
  • Total Time: 40 minutes (hob), 2 hours 10 minutes (slow cooker), 40 minutes (soup maker)
  • Yield: 4 servings
  • Category: Soup
  • Method: Slow Cooking
  • Cuisine: British
  • Diet: Vegetarian

Description

A comforting and creamy leek and potato soup recipe that can be prepared on the hob, in a slow cooker, or using a soup maker. This versatile soup combines tender leeks, potatoes, and aromatic thyme, blended smooth and enriched with cream or milk, perfect for a warming meal.


Ingredients

Main Ingredients

  • 1 tbsp Oil
  • 600 g Leeks (washed, trimmed, and sliced 1-2 cm width)
  • 1 Onion (roughly chopped)
  • 450 g Potatoes (cut into 1-2 cm cubes)
  • 1 tsp Dried thyme
  • 1.2 l Vegetable stock (reduce to 1 litre when using slow cooker or soup maker)
  • 200 ml Milk or single cream (optional, plus extra for swirling)
  • 3-4 Chives (chopped, to serve)
  • Sea salt and freshly ground black pepper (to season generously)


Instructions

  1. Heat the oil: On the hob, heat 1 tablespoon of oil in a large saucepan.
  2. Add vegetables: Add the sliced leeks, roughly chopped onion, and cubed potatoes to the pan, stirring to coat them in the oil. Cook for 3-4 minutes until slightly softened.
  3. Add seasoning and stock: Stir in 1 teaspoon of dried thyme, pour in the vegetable stock, and season with sea salt and freshly ground black pepper. Bring the mixture to a simmer.
  4. Simmer soup: Let the soup gently simmer uncovered for 25-30 minutes until the potatoes are tender enough to blend.
  5. Blend: Use a hand blender or transfer to a blender to blend the soup until smooth.
  6. Add cream or milk: Stir in 200 ml of milk or single cream to enrich the soup.
  7. Heat and serve: Bring the soup back to a gentle simmer, then ladle into bowls. Optionally, swirl in a little extra cream and scatter with chopped chives before serving.
  8. Slow cooker method: Add all ingredients except oil and milk/cream into the slow cooker, reducing the stock to 1 litre. Cook on HIGH for 2 hours until potatoes are soft. Blend the soup, stir in cream or milk, heat through with the lid on, and serve garnished with chives and optional cream swirl.
  9. Soup maker method: Place all ingredients except oil and milk/cream into the soup maker with 1 litre stock. Cook and blend according to the machine’s instructions. Stir in milk or cream, then serve garnished with chopped chives and optional cream swirl.

Notes

  • Potatoes should be cut into 1-2 cm cubes for even cooking.
  • The stock quantity is reduced to 1 litre when using a slow cooker or soup maker to compensate for evaporation differences.
  • Milk or single cream can be omitted for a lighter soup or substituted with plant-based cream for a dairy-free option.
  • Swirling extra cream and adding chopped chives at serving enhances presentation and flavor.
  • This recipe serves 4 people.