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Creamy Potato Leek Soup

Oh gosh, this Creamy Potato Leek Soup is off-the-charts good! The texture is SO velvety and creamy, and I’m just so delighted how a simple list of ingredients creates the most delicious soup.

Table of Contents

The Story Behind the Recipe

Why You’ll Love Potato Leek Soup

Potato Leek Soup Recipe Ingredients

Adaptations/Variations

How to Make It

Jump to the Full, Printable Recipe

Read Comments & Reviews

The Story Behind the Recipe

Potato Soup might be the best kind of soup. One of the very first recipes I ever posted here on Kitchen Treaty was my Creamy Potato Soup, a simple, aggressively unfussy soup made by simmering potatoes and veggies, mashing them, and then adding milk. I love it!

I’ve also shared Baked Potato Soup, Fennel Potato & Kale Soup, and a divine Sweet Potato Soup, if that can be lumped in here.

But I decided it was time to perfect a proper Potato Leek Soup. Something a little more elegant yet still comforting. A soup with French roots – Potato Leek Soup is a classic for a reason.

I went with a couple of methods to give it that undeniably creamy base: First, we start with a bit of a roux, sautéing flour in the butter. This helps add body to the soup, thickening it up. Then, we finish with heavy cream. Because we’re going for it!

The result is a velvety smooth, luxurious soup that elevates potato soup to something extra special. I love this Potato Leek Soup so much!

Why You’ll Love Potato Leek Soup

Frugal – The humble potato goes far and is still very affordable!

Full of flavor – The leeks, especially when sautéed in butter, add SO much flavor to this Leek Potato Soup.

Easy – I love how easy this soup is. And the leftovers are even better after the flavors develop even more!

Potato Leek Soup Recipe Ingredients

Butter – For sautéing the leeks. I like to start with unsalted butter to better control the overall salt content.

Leeks – You’ll want three large leeks, about 3 pounds worth. To prep them, trim off the dark green parts, then cut each leek in half lengthwise. Carefully go through the leek, layer by layer, rinsing out any dirt. Inspect them carefully! They can hide a surprising amount of dirt. Then slice.

Potatoes – Russet potatoes. You can go for Yukon Gold or Red here, but I really like the humble russet. Peel ’em and dice ’em.

Flour – Just a tablespoon to help thicken your Leek Potato Soup.

Vegetable broth – Grab a box of store-bought broth or make your own veggie broth. It’s easy!

Bay leaf – Adds a nice note of flavor.

Heavy whipping cream – For the ultimate creaminess!

Salt & pepper – To taste.

Chives – Optional, but a nice touch!

Adaptations/Variations

Vegan/Dairy-Free Potato Leek Soup – Saute in olive oil or vegan butter. Use cashews blended with water for the cream or leave it out.

Cheesy Potato Leek Soup – Stir in a cup of shredded sharp cheddar right before serving. It’s so good!

How to Make It

Melt the butter in a large Dutch oven or soup pot.

Add the leeks and a pinch of salt. Cook, stirring occasionally, until the leeks are soft.

Add the flour and cook, stirring, for about 3 minutes.

Stir in the veggie broth, then add the bay leaf and potatoes.

Bring the soup to a boil then reduce to a simmer.

Once the potatoes are tender, puree them until velvety smooth.

Stir in the heavy whipping cream, salt, and pepper. Taste and add more salt and pepper if you like.

Ladle into bowls and top with chives.

I hope you love this classic Potato Leek Soup as much as we do! I love this soup in the spring – there’s just something about spring and potatoes. But it’s also equally comforting in the fall. Either way, it’s lovely!

Print

Creamy Potato Leek Soup

The classic French soup is SO easy to make with just a few ingredients. Velvety smooth, rich, creamy, and full of flavor!
Keyword potato leek soup
Prep Time 10 minutes minutes
Cook Time 30 minutes minutes
Total Time 40 minutes minutes
Servings 6 cups
Calories 244kcal
Author Kare

Ingredients

3 tablespoons unsalted butter3 large leeks 3 pounds; dark green parts trimmed off, cut in half and washed then sliced3 medium russet potatoes 1 1/2 pounds; peeled and diced1 tablespoon all-purpose flour4 cups low-sodium vegetable broth 32 ounces1 bay leaf1/2 cup heavy whipping cream1 teaspoon kosher salt + more to taste1/4 teaspoon freshly ground black pepper + more to tastechopped fresh chives for garnish; optional

Instructions

In a large Dutch oven or soup pot, melt the butter over low heat. Add the leeks along with a pinch of salt and saute, stirring occasionally, until reduced and softened, about 10 minutes.
Add the flour and cook for 3 minutes, stirring frequently.
Stir in the vegetable broth. Add the bay leaf.
Bring to a boil then reduce heat and simmer uncovered until the potatoes are tender, about 15 minutes.
Remove from heat and let cool for a couple of minutes. Remove the bay leaf and discard. CAREFULLY using an immersion blender or by moving the soup to a blender in batches, puree the soup.
Return to the pot and warm back up if needed. Stir in the heavy whipping cream, 1 teaspoon kosher salt, and 1/4 teaspoon freshly ground black pepper. Taste and add more salt and pepper until it’s to your taste. I usually end up using 1 1/2 – 2 teaspoons of salt.
Ladle into bowls and garnish with fresh chives if using.

Notes

Adaptations/Variations

Vegan/Dairy-Free Potato Leek Soup – Saute in olive oil or vegan butter. Use cashews blended with water for the cream or leave it out.

Cheesy Potato Leek Soup – Stir in a cup of shredded sharp cheddar right before serving. It’s so good!

Store leftovers in an airtight container in the refrigerator for 3-4 days. Reheat gently on the stovetop or in the microwave. 

Nutrition

Serving: 1cup | Calories: 244kcal | Carbohydrates: 29g | Protein: 4g | Fat: 13g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.2g | Cholesterol: 37mg | Sodium: 408mg | Potassium: 547mg | Fiber: 3g | Sugar: 4g | Vitamin A: 1211IU | Vitamin C: 12mg | Calcium: 56mg | Iron: 2mg

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