Potato and Leek Soup Recipe
This potato and leek soup recipe is a creamy, velvety pureed soup made with Yukon Gold potatoes, fresh leeks, garlic, and heavy cream. It’s mild, buttery, and deeply satisfying — the kind of bowl that feels like a warm blanket on a cold day.
This is one of those recipes that looks impressive but comes together in under an hour with simple pantry staples. The leeks give it a gentle onion flavor without being sharp, and Yukon Golds blend into an especially smooth, rich base.
Table of Contents
Why You’ll Love This Potato and Leek Soup
- Silky, smooth texture from pureed Yukon Gold potatoes and heavy cream
- Mild, savory flavor with depth from fresh thyme and bay leaves
- One pot, straightforward steps — no special skills needed
- Works as a starter or a full meal with crusty bread
- Easy to adjust thickness right in the pot before serving
Potato and Leek Soup Recipe
Equipment
- Large soup pot or Dutch oven
- Knife
- Cutting board
- Measuring cups and spoons
- Immersion blender or countertop blender
- Wooden spoon
- Ladle
- Soup bowls
Ingredients
Fat
- 3 tablespoons unsalted butter
Aromatics
- 4 large leeks white and light green parts only, roughly chopped; about 5 cups
- 3 cloves garlic peeled and smashed
Vegetables
- 2 pounds Yukon Gold potatoes peeled and roughly chopped into 1/2-inch pieces
Liquid
- 7 cups chicken or vegetable broth use vegetable broth for a vegetarian soup
Herbs
- 2 bay leaves remove before blending
- 3 sprigs fresh thyme remove before blending
Seasoning
- 1 teaspoon salt plus more to taste after blending
- ¼ teaspoon freshly ground black pepper plus more to taste
Dairy
- 1 cup heavy cream add after blending
Garnish
- to taste fresh chives finely chopped; optional
Instructions
- Wash the chopped leeks thoroughly in cold water to remove any grit, then lift them from the water and drain well.
- Melt the butter in a large soup pot over medium heat. Add the leeks and garlic and cook for about 10 minutes, stirring regularly, until the leeks are soft and wilted but not browned.
- Add the potatoes, broth, bay leaves, thyme, salt, and black pepper. Bring to a boil, cover, reduce the heat to low, and simmer for about 15 minutes, until the potatoes are very soft and fall apart easily when pressed.
- Remove and discard the bay leaves and thyme sprigs. Use an immersion blender to purée the soup until smooth. If using a countertop blender, work in small batches, filling the blender no more than halfway and venting the lid for steam to escape.
- Stir in the heavy cream and bring the soup back to a gentle simmer. Taste and adjust the salt and pepper. If the soup is too thick, add water or broth; if too thin, simmer uncovered for a few minutes until thickened.
- Ladle the soup into bowls and garnish with chopped chives, if desired. Serve hot with crusty bread.
Notes
What Ingredients Do You Need for Potato and Leek Soup?
| Ingredient Group | Ingredient | Exact Amount | Purpose or Note |
|---|---|---|---|
| Fat | Unsalted butter | 3 tablespoons | For sweating the leeks and garlic |
| Aromatics | Leeks, white and light green parts only, roughly chopped | 4 large (about 5 cups) | Primary flavor base; darker green parts are too tough |
| Aromatics | Garlic cloves, peeled and smashed | 3 cloves | Adds gentle depth without sharpness |
| Vegetables | Yukon Gold potatoes, peeled and roughly chopped into 1/2-in pieces | 2 lb | Yukon Golds puree creamier than starchy potatoes |
| Liquid | Chicken or vegetable broth | 7 cups | Vegetable broth keeps it vegetarian |
| Herbs | Bay leaves | 2 leaves | Subtle herbal background; removed before blending |
| Herbs | Fresh thyme sprigs | 3 sprigs | Earthy, aromatic; removed before blending |
| Seasoning | Salt | 1 teaspoon | Season to taste after blending |
| Seasoning | Freshly ground black pepper | 1/4 teaspoon | Adjust after blending |
| Dairy | Heavy cream | 1 cup | Added after blending for richness and silkiness |
| Garnish | Chives, finely chopped | To taste | Fresh finish; optional but recommended |
Yukon Gold potatoes are the real star here. Their naturally buttery, low-starch flesh blends into a much silkier leek soup than russet potatoes would.
The heavy cream goes in after pureeing, which keeps the color bright and the texture smooth. Using fresh thyme sprigs (rather than dried) makes them easy to fish out before blending.
How to Make Potato and Leek Soup Step by Step
Step 1: Sweat the Leeks and Garlic
- Melt the butter over medium heat in a large soup pot. Add the leeks and garlic and cook, stirring regularly, until soft and wilted, about 10 minutes. Adjust the heat as necessary so as not to brown.
Pro Tip: Keep the heat at medium or just below — you want the leeks to soften gently, not caramelize, so the soup stays pale and delicately flavored.
Step 2: Add Potatoes and Simmer
- Add the potatoes, broth, bay leaves, thyme, salt, and pepper to the pot and bring to a boil. Cover and turn the heat down to low. Simmer for 15 minutes, or until the potatoes are very soft.
Step 3: Blend, Add Cream, and Finish
- Fish out the thyme sprigs and bay leaves, then puree the soup with a hand-held immersion blender until smooth. (Alternatively, use a standard blender to puree the soup in batches; see note below.) Add the heavy cream and bring to a simmer. Taste and adjust seasoning with salt and pepper. If the soup is too thin, simmer until thickened. If it’s too thick, add water or stock to thin it out. Garnish with fresh herbs if desired.
Pro Tip: If using a standard blender, fill it no more than halfway per batch and hold the lid down firmly with a folded kitchen towel — hot liquids expand and can push the lid off.
Expert Tips, Variations, and Troubleshooting for Potato and Leek Soup
Pro Tips for Success
Wash leeks thoroughly. Leeks trap grit between their layers. After chopping, swish them in a bowl of cold water and lift them out, leaving any dirt behind at the bottom.
Don’t rush the leek-sweating step. Ten minutes over medium heat is the target. Under-softened leeks can leave the finished leek and potato soup slightly fibrous after blending.
Make sure the potatoes are very soft before blending. If they’re even a little firm, the soup won’t puree as smoothly. Prod a piece with a spoon — it should fall apart easily.
Adjust consistency at the end, not the beginning. The recipe gives you the right amount of liquid, but potato starch varies. Simmer to thicken or add stock to loosen — it’s easy to fine-tune right before serving.
Season after blending and after adding the cream. Blending concentrates and then cream dilutes flavors slightly. Always do a final taste before ladling into bowls.
Troubleshooting Common Problems
Problem: The soup has a slightly stringy or gritty texture after blending.
Solution: The leeks likely needed more cooking time. Next time, make sure they’re fully wilted and tender before adding the potatoes. Blending longer can also help smooth things out.
Problem: The soup is too thin after adding the cream.
Solution: Bring it to a gentle simmer uncovered and let it reduce for a few minutes, stirring occasionally, until it reaches your preferred consistency.
Problem: The soup tastes flat or bland.
Solution: Taste and add salt in small increments first — this is the most common fix. A little extra pepper or a squeeze of lemon juice can also brighten the flavor.
How to Store and Reheat Potato and Leek Soup
| Storage Method | Duration | Best Practice |
|---|---|---|
| Refrigerator | Up to 4 days | Cool completely before transferring to an airtight container |
| Freezer | Up to 3 months | Freeze before adding cream for best texture; add cream after reheating |
Reheat the potato soup gently on the stovetop over medium-low heat, stirring occasionally, until warmed through. Avoid a hard boil, which can cause the cream to separate.
The soup will thicken in the fridge overnight. Stir in a splash of stock or water while reheating to bring it back to the right consistency.
Leftover soup works well as a sauce base for roasted vegetables, a creamy pasta sauce thinned with a little pasta water, or a topping for baked potatoes.
If you enjoy comforting soups like this one, our cozy sausage, kale, and white bean soup and this butternut carrot ginger soup are both worth bookmarking for cooler nights.
FAQs About Potato and Leek Soup
Can I make potato and leek soup ahead of time?
Yes. The soup keeps well in the refrigerator for up to 4 days. Make it a day ahead, cool it completely, and store it in an airtight container. Reheat gently on the stovetop and stir in a splash of stock if it has thickened too much.
Can I use a regular blender instead of an immersion blender?
You can. Puree the soup in batches, filling the blender no more than halfway each time. Hold the lid firmly with a folded kitchen towel to prevent steam from forcing it off. An immersion blender is more convenient and means fewer dishes.
Can I use a different type of potato?
Yukon Gold potatoes are recommended because they puree into a smooth, buttery texture. Russet potatoes can work but may produce a slightly starchier, less silky result. Waxy potatoes like red potatoes are not ideal for a smooth pureed soup.
How do I make this soup vegetarian?
Simply use vegetable broth instead of chicken broth. Every other ingredient in the recipe is already vegetarian, so that single swap is all you need.
Why is my potato and leek soup lumpy after blending?
The potatoes may not have been soft enough before blending. They should be completely tender and fall apart when pressed. Blend longer, or if you used a standard blender, try a second pass through the blender in smaller batches.
Ready to Make This Potato and Leek Soup?
Give this recipe a try and see just how satisfying a simple bowl of leek soup can be. If you make it, leave a comment below and let us know how it turned out — honest ratings genuinely help.
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Save this silky potato and leek soup recipe to Pinterest — creamy, comforting, and ready in under an hour with simple ingredients. The perfect cozy bowl for cool-weather cooking.
