Italian Leek and Potato Soup (Creamy, Comforting and Easy)

Ingredients

• 2 medium (about 450–500 g total)leeks
• 400 gpotatoes
• 1 litrevegetable broth
• to tastefreshly grated Parmigiano Reggiano
• 45 ml (3 tablespoons), plus more to serveextra virgin olive oil
• to tastefine salt
• to tastespeck, cut into strips (or smoked pancetta or bacon)
• to tastecrispy bread croutons

Instructions

1. 1

   Prepare the leeks

   Wash and clean the leeks, trimming away the roots and dark green parts. Remove any tough outer layers, slice the leeks into rounds that are not too thin, and put them in a large pot.

2. 2

   Soften the leeks

   Add the extra virgin olive oil and cook over medium heat for a few minutes, stirring often, until the leeks start to soften but have not browned.

3. 3

   Dice the potatoes

   Meanwhile, peel the potatoes and cut them into small, even cubes so they cook at a similar rate.

4. 4

   Cook the vegetables

   When the leeks are soft and fragrant, add the potatoes and stir. Cook them together for a couple of minutes so the potatoes take on the leek flavour.

5. 5

   Simmer the soup

   Pour in enough vegetable broth to fully cover the vegetables. Bring to a gentle boil, reduce the heat and simmer for about 30 minutes, until the potatoes are very tender when pierced with a fork.

6. 6

   Blend and season

   Take the pot off the heat and blend the soup in the pot with an immersion blender until smooth. Season with salt to taste; blend thoroughly for a creamier finish, or briefly for a more rustic texture with small vegetable pieces.

7. 7

   Toast the speck

   Cut the speck into strips and toast them in a small pan over medium heat for a few minutes, until slightly crisp.

8. 8

   Finish and serve

   Serve the soup hot in individual bowls. Add a drizzle of extra virgin olive oil, freshly grated Parmigiano Reggiano, the crisp speck and bread croutons.

What is Italian leek and potato soup?

Leek and potato soup is a simple vegetable soup whose soft, mild flavour and blended texture make it a familiar comfort-food favourite. This Italian-style version keeps the base uncomplicated, then adds Parmesan, speck and croutons at the table.

The method relies on a classic combination of leeks, potatoes and broth rather than cream for its body. Gentle cooking lets the vegetables soften before blending, while the toppings bring salty, smoky and crunchy contrasts.

Nutrition and macros by portion

The nutrition label shows one serving as written: 209 calories, 3g protein, 27g carbs, 11g fat.

The potatoes provide most of the carbohydrates, while the olive oil and the finishing speck contribute much of the fat. The broth and vegetables provide some protein, with Parmesan and speck adding more; serve with a green salad to round out the plate.

Choosing and preparing the leeks

Leeks: Trim off the roots and dark green parts, then remove any outer layers that feel tough. Wash them carefully, since grit can lodge between the layers, and slice them into rounds that are not paper-thin.

Potatoes: Cut the peeled potatoes into evenly sized small cubes. This helps them become tender at roughly the same time and makes blending straightforward.

Build flavour without browning

Start the leeks in olive oil over medium heat and stir often. The aim is to soften them until fragrant, not to colour them; browning can make their flavour more pronounced and change the soup's delicate character.

Once the potatoes are in, give them a couple of minutes with the leeks before adding broth. This short step lets them pick up some of the flavour already in the pot.

Getting the texture right

Broth level: Pour in enough vegetable broth to cover the vegetables. Keep the soup at a gentle simmer rather than a vigorous boil while the potatoes cook.

Blending: Take the pot off the heat before using an immersion blender. Blend thoroughly for a smooth soup, or use short bursts and stop while a few small pieces remain for a more rustic bowl.

Check the timing and doneness

The soup simmers for about 30 minutes, but use the potatoes as your doneness cue: a fork should pass through them very easily. If they are still firm, continue simmering and check again before blending.

The leeks soften first, so keep the heat moderate during that stage and stir regularly. Toast the speck while the cooked soup is ready to finish, so it can go into the bowls crisp.

Finish with contrasting toppings

Speck: Toast the strips in a small pan until slightly crisp, then scatter them over the soup just before serving. Smoked pancetta or bacon can be used if speck is unavailable.

To serve: Add Parmesan, a little olive oil and bread croutons to each bowl. The cheese and cured meat add savoury depth, while the croutons provide a crisp contrast to the smooth soup.

What to serve alongside

The croutons already add bread to the bowl, so this soup works well as a simple meal on its own. For a fuller table, serve it with a green salad or extra bread.

Add the toppings at the last moment so the croutons and speck keep their texture. Put extra Parmesan and olive oil on the table for anyone who wants to finish their serving to taste.

Recipe notes & tips

• Wash between the leek layers thoroughly to remove any trapped grit.
• Keep the leeks moving in the pot so they soften without taking on colour.
• Cut the potatoes into similar-sized cubes for even cooking.
• Check that a fork passes easily through the potatoes before blending.
• Blend off the heat and keep the blender head submerged to limit splashing.
• Toast the speck close to serving time to preserve its crispness.

Variations

• Use pancetta: Replace the speck with smoked pancetta and toast it until crisp.
• Use bacon: Cut smoked bacon into strips and cook it in the same way as the speck.
• Make it rustic: Blend briefly and leave some small pieces of vegetables in the soup.
• Add extra cheese: Finish each bowl with more grated Parmigiano Reggiano.
• Change the crunch: Use toasted bread pieces in place of prepared croutons.

Common mistakes to avoid

• Leaving grit in the leeks: Separate the layers and wash them carefully before slicing.
• Browning the leeks: Keep the heat at medium and stir often as they soften.
• Uneven potato pieces: Cut the cubes to a similar size so they cook at the same pace.
• Blending too soon: Wait until the potatoes are very tender when pierced with a fork.
• Over-blending a rustic soup: Use brief pulses and stop while small pieces remain.
• Adding toppings too early: Finish each bowl just before serving so the speck and croutons stay crisp.

How to store

Refrigerate leftover soup in a covered container and use within 3 days. Reheat gently in a saucepan, stirring; store the speck and croutons separately and add them just before serving.

Frequently asked questions