Potato leek soup is a classic for a reason: it's humble, comforting, and incredibly satisfying. The combination of earthy potatoes and mild, sweet leeks creates a velvety base that feels like a warm hug in a bowl.
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In this recipe, I'll guide you through the process step by step, from prepping the leeks to achieving that perfect silky texture. Whether you're a seasoned cook or a beginner, this soup is forgiving and easy to master.
What sets this version apart is the caramelization of the leeks and the use of Yukon Gold potatoes, which give a naturally buttery flavor. The result is a soup that's both elegant and approachable, perfect for a weeknight dinner or a special lunch.
Why You'll Love This Recipe
About the Ingredients
3 tablespoons (42g) unsalted butter
Butter adds richness. For a dairy-free version, use olive oil or vegan butter.
3 large leeks (about 450g), white and light green parts only, sliced
Leeks are milder than onions. Make sure to clean them thoroughly; slice and soak in water to remove grit.
1 medium yellow onion, diced
Adds depth. Substitute with shallots for a sweeter flavor.
2 cloves garlic, minced
Fresh garlic is best. Use 1/2 teaspoon garlic powder if needed.
1.5 pounds (680g) Yukon Gold potatoes, peeled and cubed
Yukon Golds are creamy and hold shape well. Russets also work but can get gummy if over-blended.
4 cups (960ml) low-sodium chicken or vegetable broth
Use vegetable broth for vegetarian. Low-sodium allows you to control salt.
1 cup (240ml) water
Adds extra liquid without making it too salty.
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
Thyme complements the leeks. You can also use rosemary or marjoram.
1 bay leaf
Adds subtle aroma. Remove before blending.
1 teaspoon salt, plus more to taste
Adjust based on broth saltiness. Sea salt or kosher salt works.
1/2 teaspoon black pepper, freshly ground
Adds a gentle kick. White pepper for a milder flavor.
1/2 cup (120ml) heavy cream (optional)
For extra creaminess. Omit for a lighter version or use coconut cream for dairy-free.
Tips & Tricks
Clean leeks thoroughly
Slice them lengthwise and rinse under running water to remove all dirt.
Don't over-blend
Blend just until smooth; over-blending can make potatoes gummy.
Adjust thickness
Add more broth or water if too thick; simmer uncovered if too thin.
Pro Tips
Step-by-Step Instructions
1. Melt butter and sauté aromatics
In a large pot, melt the butter over medium heat (350°F/175°C). Add the sliced leeks and diced onion. Cook, stirring occasionally, until the leeks are soft and translucent, about 8-10 minutes. They should not brown, just become tender.
2. Add garlic and potatoes
Stir in the minced garlic and cook for 1 minute until fragrant. Add the cubed potatoes, thyme, bay leaf, salt, and pepper. Stir to coat everything.
3. Pour in broth and simmer
Pour in the broth and water. Increase heat to high (400°F/200°C) and bring to a boil. Then reduce heat to low (200°F/95°C), cover, and simmer for 15-20 minutes, or until potatoes are fork-tender.
4. Remove bay leaf and blend
Take out the bay leaf. Using an immersion blender, blend the soup until smooth. Alternatively, carefully transfer to a blender in batches. Blend until velvety.
5. Stir in cream (optional)
If using cream, stir it in now. Taste and adjust seasoning with more salt and pepper if needed.
6. Simmer and serve
Let the soup simmer for 5 more minutes to meld flavors. Serve hot, garnished with fresh thyme or chives.
Delicious Variations
Add protein
Stir in cooked shredded chicken or crispy bacon for a heartier meal.
Spice it up
Add a pinch of cayenne or red pepper flakes for heat.
Vegan version
Use olive oil instead of butter, skip the cream, and use vegetable broth.
How to Store Creamy Potato Leek Soup
Refrigerator
Store in an airtight container in the fridge for up to 4 days.
Freezer
Freeze for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating
Reheat on the stovetop over medium-low heat, adding a splash of broth or water to loosen.
Frequently Asked Questions
Q: Can I use regular onions instead of leeks?
Yes, you can substitute with 2 medium onions, but the flavor will be more pungent and less sweet.
Q: How do I clean leeks properly?
Slice the leeks lengthwise, then chop. Place in a bowl of cold water and swish to release grit. Lift out with a slotted spoon.
Q: Can I make this soup ahead of time?
Absolutely. The flavors deepen overnight. Store in the fridge and reheat gently.
Q: Can I freeze potato leek soup?
Yes, but the texture may change slightly due to the potatoes. Freeze in airtight containers for up to 3 months.
Q: What can I use instead of heavy cream?
You can use half-and-half, whole milk, or a dairy-free milk like oat milk. For a lighter option, skip the cream entirely.
I hope you enjoy this creamy potato leek soup as much as I do. It's a perfect bowl of comfort that's easy to make and even easier to love. Give it a try and let me know how it turns out in the comments below!
Creamy Potato Leek Soup
Creamy Potato Leek Soup is a velvety, comforting bowl made with simple ingredients, ready in just 35 minutes for a cozy meal.
🧂 Ingredients
- 3 tablespoons (42g) unsalted butter
- 3 large leeks (about 450g), white and light green parts only, sliced
- 1 medium yellow onion, diced
- 2 cloves garlic, minced
- 1.5 pounds (680g) Yukon Gold potatoes, peeled and cubed
- 4 cups (960ml) low-sodium chicken or vegetable broth
- 1 cup (240ml) water
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
- 1 bay leaf
- 1 teaspoon salt, plus more to taste
- 1/2 teaspoon black pepper, freshly ground
- 1/2 cup (120ml) heavy cream (optional)
📋 Instructions
- 1Melt butter and sauté aromatics — In a large pot, melt the butter over medium heat (350°F/175°C). Add the sliced leeks and diced onion. Cook, stirring occasionally, until the leeks are soft and translucent, about 8-10 minutes. They should not brown, just become tender.
- 2Add garlic and potatoes — Stir in the minced garlic and cook for 1 minute until fragrant. Add the cubed potatoes, thyme, bay leaf, salt, and pepper. Stir to coat everything.
- 3Pour in broth and simmer — Pour in the broth and water. Increase heat to high (400°F/200°C) and bring to a boil. Then reduce heat to low (200°F/95°C), cover, and simmer for 15-20 minutes, or until potatoes are fork-tender.
- 4Remove bay leaf and blend — Take out the bay leaf. Using an immersion blender, blend the soup until smooth. Alternatively, carefully transfer to a blender in batches. Blend until velvety.
- 5Stir in cream (optional) — If using cream, stir it in now. Taste and adjust seasoning with more salt and pepper if needed.
- 6Simmer and serve — Let the soup simmer for 5 more minutes to meld flavors. Serve hot, garnished with fresh thyme or chives.
Diego explores the intersection of technology and personal finance, sharing his journey of automating savings and investing spare change. He writes for beginners who want to make their money work harder without jargon.
