Leek and Potato Soup with Stilton Toast

Smooth leek and potato soup is a comforting British-style bowl with a gentle savoury sweetness from softened leeks and a naturally creamy body from tender potatoes blended into the stock. Double cream gives the finished soup a rounded, velvety texture without masking the clean vegetable flavour. The Stilton toast turns a simple soup into a more complete meal: crisp bread, softened blue cheese and a salty tang that cuts through the richness. It is easy enough for a weeknight dinner, but still feels considered, especially when served hot with the toast alongside for dipping or breaking over the bowl.
Cuisine style British comfort food
Cooking style One-pot cooking • Make-ahead friendly • Freezer-friendly
Time commitment Under 1 hour

Why this recipe works

  • Velvety texture: Tender potatoes blend smoothly into the stock, while double cream rounds out the finish without making the soup heavy.
  • Gentle savoury depth: Softened leeks, butter, bay leaves and vegetable stock create a mellow base that lets the leek flavour stay clear.
  • Crisp, salty contrast: Stilton toast adds crunch and a sharp, creamy saltiness that balances the soft, mild soup.

Get the most out of this recipe

Ingredient notes

  • Clean the leeks well: Slice the leeks lengthways before rinsing so any grit trapped between the layers can be washed away.
  • Choose creamy potatoes: Yukon Gold potatoes give the soup a naturally smooth, rounded texture once blended.
  • Use Stilton for contrast: Stilton brings the salty, tangy edge that makes the toast more than just a garnish.

Texture tips

  • For a smoother soup: Blend thoroughly after removing the bay leaves, making sure the potatoes are completely tender first.
  • To loosen the consistency: Add a little more vegetable stock after blending until the soup reaches your preferred thickness.
  • Keep the cream gentle: Warm the soup gently after adding the double cream and avoid boiling, which can cause the cream to split.

Make-ahead tips

  • Make the soup in advance: The soup can be cooked ahead, cooled quickly and refrigerated in a sealed container for up to 3 days.
  • Freeze without the toast: Freeze the soup on its own, then defrost overnight in the fridge before reheating.
  • Reheat gently: Warm in a saucepan over a low heat, stirring often, and add a little stock if it has thickened.

Serving ideas

  • Serve with a simple salad: A crisp green salad works well alongside the creamy soup and rich Stilton toast.
  • Add a fresh finish: A little chopped parsley or chives can brighten the bowl without overpowering the leek flavour.

Equipment you'll need

Ingredients

Soup

Stilton toast

Instructions
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  1. Trim the leeks, then slice them lengthways and rinse well to remove any grit; slice into thin half-moons. Peel the potatoes and cut into small, even chunks.
  2. Melt the butter in a large pot over a medium heat. Add the leeks with the salt and pepper, then cook for 8 to 10 minutes, stirring, until softened but not browned.
  3. Stir in the potatoes and bay leaves, then pour in the vegetable stock. Bring to the boil, reduce to a gentle simmer, and cook for 15 to 18 minutes until the potatoes are very tender.
  4. Remove and discard the bay leaves, then blend the soup until completely smooth. Stir in the double cream and warm gently for 2 to 3 minutes until steaming hot, without boiling.
  5. Toast the bread in a dry frying pan over a medium heat for 1 to 2 minutes per side until crisp and golden. Crumble the Stilton over the hot toast so it softens slightly, then serve alongside the soup.

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Recipe notes

Tips

  • For a cleaner leek flavour, use only the white and pale green parts and take time to rinse thoroughly.
  • If you prefer a lighter soup, add a splash more vegetable stock after blending to loosen it to your liking.
  • Avoid boiling once the double cream is added, as it can split and dull the flavour.

Substitutions

  • Replace Double cream with Crème fraîche for a slightly tangier finish; stir it in off the heat.
  • Replace Crusty white bread with Sourdough bread for a sturdier toast that holds the Stilton well.
  • Replace Unsalted butter with Olive oil for a lighter base.

Storage

  • Refrigerate up to 3 days
  • Cool the soup quickly, then refrigerate in a sealed container. Reheat gently in a saucepan over a low heat until piping hot, stirring often; add a splash of vegetable stock if it has thickened. Freeze the soup without the toast for up to 3 months and defrost overnight in the fridge before reheating.

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Leek and Potato Soup with Stilton Toast
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Recipe overview

  • Servings: 4 servings
  • Total time: 45min (15min active)
  • Difficulty: Easy
  • Cuisine: British
  • Allergens:
    Gluten Milk Wheat
Beginner friendly One pot Freezer friendly Kid friendly

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