Potato Leek Soup

You know those recipes that make you feel like a genius in the kitchen even though they're secretly super simple? This potato leek soup is exactly that kind of recipe.

Last Tuesday afternoon when the temperature dropped here in Nashville, I decided we needed something warm and comforting for dinner. Bradley had mentioned he was tired of the same old meals (typical teenager, right?), and Amy wanted something "cozy." I remembered this soup from my cooking school days – we'd made a French version called potage parmentier, and honestly? It knocked my socks off that something so simple could taste so creamy without a drop of cream.

I've been making this soup for three years now, and it's become our go-to when someone's feeling under the weather or when we just need a hug in a bowl. The secret is using starchy potatoes that break down and create this naturally velvety texture when you blend them. No heavy cream needed, which makes it lighter but still totally satisfying. If you're looking for more comfort food favorites, you'll want to check out my Best Mashed Potatoes recipe too – they're another family favorite that proves simple ingredients can create something special.

The best part? This whole soup comes together in about 25 minutes, and you probably have most of the ingredients already. Let me show you how easy it is.

Jump to:

• Why You'll Love This Potato Leek Soup
• Ingredients For Potato Leek Soup
• How To Make The Best Potato Leek Soup
• Storage And Reheating Your Soup
• Tips For Making Perfect Potato Leek Soup
• FAQs About Potato Leek Soup
• Recipes You May Like
• Final Thoughts On This Simple Soup
• Potato Leek Soup (No Cream!)

Why You'll Love This Potato Leek Soup

Here's what makes this soup a winner in my kitchen:

Quick cooking time – From start to finish, you're looking at 25 minutes. That's faster than delivery and way more satisfying.

Naturally creamy texture – The starchy potatoes create this amazing velvety consistency when blended. No cream, no cashews, no coconut milk necessary (though you can add those if you want).

Simple ingredients – Leeks, potatoes, garlic, herbs, and vegetable stock. That's it. Nothing fancy or hard to find.

Flexible and forgiving – Want it chunky? Blend less. Want it silky smooth? Blend more. Need to add more liquid? Go ahead. This soup doesn't stress you out.

Dairy-free and vegan-friendly – Perfect for anyone avoiding dairy, and it's naturally plant-based if you use vegetable stock.

Budget-friendly comfort food – Potatoes and leeks won't break the bank, but the taste? Restaurant-worthy. John actually asked if I'd ordered this from somewhere the first time I made it!

Ingredients For Potato Leek Soup

Here's what you'll need to make this comforting bowl of goodness:

• 2 teaspoons olive oil – For sautéing the vegetables
• 2 leeks – The star of the show! Make sure to clean them really well (more on that below)
• 1 small onion, chopped – Adds depth and sweetness
• 3-4 fresh garlic cloves, minced – I always use 4 because we love garlic in this house
• 1 teaspoon thyme – Dried or fresh works great
• 1 teaspoon marjoram – This herb adds a subtle peppery note that's just lovely
• 1.5 pounds white potatoes – Russet or Yukon Gold work best (about 3-4 medium potatoes)
• 5½ cups vegetable stock – Use good quality for the best flavor
• 1 teaspoon salt, plus more to taste – You'll likely need another teaspoon when serving
• Black pepper to taste – Freshly ground is best

A quick note on the potatoes: I prefer Yukon Gold because they're naturally buttery, but Russet potatoes work beautifully too and create an even creamier texture when blended.

How To Make The Best Potato Leek Soup

Let me walk you through this step by step. Trust me, it's easier than you think!

1. Prep and wash your leeks thoroughly. Start by cutting off the root end and the dark green tops of your leeks. You want to use only the white and light green parts. Slice them into thin rounds, then put them in a strainer and rinse under cold water, separating the rings with your fingers to get rid of any hidden dirt. Leeks can be sneaky with trapped sand between their layers, and you definitely don't want gritty soup. I learned this the hard way during my first attempt at cooking school!

2. Heat olive oil in a large soup pot over medium heat. Once it's shimmering, add your chopped onion, minced garlic, and the cleaned leeks.

3. Sauté the vegetables for 3-5 minutes until they're soft and starting to turn golden. The kitchen will smell amazing at this point. Amy always comes running when she smells the leeks cooking – she says they smell "fancy."

4. Add your cubed potatoes, thyme, and marjoram. Stir everything together and let it cook for another 2 minutes. This helps release the flavors from the herbs and gets the potatoes coated in all that delicious garlic and leek mixture.

5. Pour in your vegetable stock and add the salt. The liquid should just barely cover the potatoes. If you need a little more, add another half cup of stock or water.

6. Bring the soup to a boil, then reduce the heat to low. Cover the pot with a lid and let it simmer gently for 15-20 minutes, until the potatoes are completely tender when you poke them with a fork.

7. Time to blend! This is where the magic happens. Use an immersion blender right in the pot (my preferred method because it's less messy), or carefully transfer the soup in batches to a regular blender. If you like a chunky soup like Bradley does, blend only about three-quarters of it. For a silky smooth texture, blend until completely smooth.

8. Taste and adjust the seasoning. I almost always add another full teaspoon of salt at this point, plus plenty of freshly ground black pepper. Everyone's taste is different, so add a little at a time until it's perfect for you.

9. Serve immediately with your favorite toppings. We love crusty bread, a drizzle of olive oil, and sometimes I'll add crispy bacon bits for John and Bradley (Amy prefers hers plain with lots of bread for dipping).

Storage And Reheating Your Soup

This potato and leek soup stores beautifully, which is one reason I love making it.

Refrigerator: Let the soup cool completely, then transfer it to an airtight container. It'll keep in the fridge for up to 4 days. The flavors actually develop and get even better the next day, so don't be surprised if your leftover bowl tastes even more amazing.

Freezer: You can freeze this soup for up to 3 months. Honestly? The texture can get a tiny bit grainy after freezing because of the potatoes, but here's my trick – just blend it again after reheating and it comes right back to that creamy consistency.

Reheating: Warm the soup gently on the stovetop over medium-low heat, stirring occasionally. If it's gotten too thick (which happens because the potatoes continue to absorb liquid), add a splash of vegetable stock or water to thin it back out. I usually need to add about a quarter cup when reheating leftovers.

Tips For Making Perfect Potato Leek Soup

Here are some things I've learned after making this soup more times than I can count:

Clean those leeks like your life depends on it. Seriously. Leeks grow in sandy soil and dirt gets trapped between the layers. I slice them first, then rinse really well. Sometimes I'll even soak them in a bowl of cold water for a few minutes if they look particularly dirty.

Don't skip the sautéing step. Cooking the leeks, onion, and garlic first brings out their natural sweetness and creates so much more flavor than just dumping everything in the pot together.

Use starchy potatoes for the best texture. Russets or Yukon Golds break down beautifully when blended and create that naturally creamy consistency. Waxy potatoes like red potatoes won't give you the same result.

Invest in good vegetable stock. Since this soup has so few ingredients, each one really matters. I like using low-sodium stock so I can control the salt level myself.

Want it even creamier? Stir in a splash of coconut milk, a dollop of sour cream, or some Greek yogurt just before serving. I sometimes do this when John wants an extra-rich bowl.

Try different herbs. While I love thyme and marjoram, this soup is also fantastic with fresh rosemary or a bay leaf (just remember to remove the bay leaf before blending!).

Make it heartier. Sometimes I'll add crispy bacon, some sautéed mushrooms, or even leftover rotisserie chicken to turn this into a more substantial meal.

FAQs About Potato Leek Soup

Recipes You May Like

If you're loving this comforting soup, here are some other recipes my family adores:

• Best Mashed Potatoes – The perfect creamy side dish that pairs beautifully with just about everything. These are the mashed potatoes Bradley requests for every holiday dinner.
• Tuscan Chicken Recipe – Another one-pot wonder that's creamy, comforting, and comes together quickly. The sun-dried tomatoes in this one are absolutely amazing.
• Garlic Butter Melting Potatoes – If you can't get enough potatoes (and who can?), these crispy-on-the-outside, creamy-on-the-inside potatoes are incredible.

Final Thoughts On This Simple Soup

This potato leek soup has earned its spot as a regular in our dinner rotation, and I think it will in yours too.

The combination of sweet leeks, earthy potatoes, and aromatic herbs creates something that tastes way more complicated than it actually is. I love that it's naturally dairy-free but still manages to be creamy and satisfying. It's proof that you don't need a long list of ingredients or fancy techniques to make something really special.

Give this soup a try this week when you need something warm and comforting. Serve it with crusty bread and a simple salad, and you've got yourself a meal that'll warm you from the inside out. My family never complains when I announce this is on the menu, and that's saying something with a teenager in the house!

Save this recipe on Pinterest so you can find it again when soup season rolls around, and let me know what you think when you try it!

Happy cooking, and here's to many more cozy dinners with your loved ones.

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