Leek and potato soup is the centuries-old European staple that takes two cheap ingredients — leeks and Yukon Gold potatoes — and turns them into a silky, restaurant-worthy bowl. This light version swaps heavy cream for whole milk, cutting the fat without losing the velvety texture that makes the soup worth making in the first place. Ready in 35 minutes, serves six, and works as both a weeknight starter and a quiet Sunday dinner.
Quick Stats
Gluten-Free
Nut-Free
Why This Recipe Works
Whole milk replaces heavy cream: Using whole milk instead of heavy cream cuts the saturated fat substantially while keeping the soup creamy. The Yukon Gold starch does most of the thickening work, so the milk is there for richness — not for body.
Yukon Gold is the right potato: Yukon Gold has more starch than waxy varieties (red, fingerling) and breaks down beautifully when simmered, giving the soup its silky body without needing flour or roux.
Two-stage cook for cleaner flavor: An 8–10 minute butter sauté of leeks and onion before the broth goes in pulls sweetness out of the alliums. Skipping this step gives you a thin, vegetal-tasting soup; the sauté is non-negotiable.
Built on simple, seasonal ingredients: Leeks bring vitamin C, potassium, and allicin (the same beneficial compound found in garlic). Potatoes contribute complex carbohydrates and potassium. The whole pot costs a fraction of a restaurant bowl.
One pot, one blender, one timer: Sauté the alliums, add everything else, simmer 20 minutes, blend. There’s no roux to make, no temper to manage, no last-minute panics. It’s the right recipe for a Tuesday night.
Heavy Cream Version vs. This Lighter Recipe
| Nutrient (per 1.5-cup serving) | Traditional (Heavy Cream) | This Recipe (Milk) | Difference |
|---|---|---|---|
| Calories | 560 | 425 | -135 (-24%) |
| Total Fat | 42g | 28g | -14g (-33%) |
| Saturated Fat | 26g | 14g | -12g (-46%) |
| Protein | 7g | 8g | +1g (more from milk) |
| Texture | Velvety | Silky (potato-based) | Nearly identical |
Here is the full leek and potato soup recipe with exact measurements, equipment, and method.
Leek and Potato Soup | Light Creamy Spring Recipe
Ingredients
Equipment
Method
- Slice the leeks into thin rounds using only the white and light green parts. Submerge the slices in a bowl of cold water and swish to release any sand, then lift them out with a slotted spoon. Peel and cube the potatoes into 1-inch pieces.
- Melt the butter in a large soup pot or Dutch oven over medium heat. Add the cleaned leeks and chopped onion. Cook, stirring occasionally, until soft and translucent but not browned, about 8–10 minutes.
- Add the cubed potatoes, vegetable broth, whole milk, and fresh thyme to the pot. Bring to a gentle boil, then reduce the heat and simmer uncovered for about 20 minutes, until the potatoes are very tender when pierced with a knife.
- Stir in the optional heavy cream if using. Blend the soup until completely smooth using an immersion blender directly in the pot, or transfer in batches to a standing blender (fill no more than half full, vent the lid to release steam).
- Season with salt and white pepper to taste. White pepper is preferred over black for a clean look in the pale soup.
- Ladle into bowls and garnish with chopped fresh chives. Serve hot.
Nutrition
Notes
Tried this recipe?
Let us know how it was!Chef Tips for Perfect Leek and Potato Soup
Clean the leeks twice: Sand and grit hide between the layers of leek. Slice them first, then submerge the slices in a bowl of cold water and swish — the grit sinks. Lift the leeks out with a slotted spoon, never pour them through a colander or you’ll pour the grit right back over them.
Use only the white and light green parts: The dark green tops are tough and bitter when simmered. Save them in a freezer bag for vegetable broth instead — they’re perfect for the homemade vegetable broth recipe.
Cube the potatoes evenly: Roughly 1-inch cubes cook through in 18–20 minutes. Smaller pieces overcook and make the soup gummy; larger pieces leave undercooked centers that mess up the blend.
Don’t skip the butter sauté: A full 8–10 minutes in butter pulls out the sweet, deep allium flavor that defines this soup. Rushing this step gives you a flat, watery result that no amount of cream can fix.
Blend in stages for the right texture: Use an immersion blender if you want a rustic finish with some texture. For full restaurant-style silk, transfer in batches to a standing blender — but only fill it halfway and crack the lid so steam escapes.
Season with white pepper, not black: White pepper is the traditional move in cream soups because it disappears into the color and gives a cleaner heat. Black pepper specks will be visible against the pale soup.
Storage and Serving Suggestions
Refrigerator Storage: Cool to room temperature before transferring to airtight containers. Keeps for 3–4 days in the fridge. Stir well before reheating — the milk and starch will separate slightly as it sits.
Freezer Storage: Freezing is possible but tricky — dairy-based soups can break and become grainy after thawing. For best results, freeze the soup base before adding the milk and cream (after blending the potato-broth mixture), then add fresh milk during reheating. Keeps frozen for up to 3 months.
Reheating: Reheat gently on the stovetop over medium-low heat, stirring frequently to prevent the dairy from scorching. Add a splash of milk or broth if the soup has thickened in the fridge. Avoid microwave reheating for full bowls — single portions are fine at 60% power.
Meal Prep Strategy: Make a full batch on Sunday and divide into single-serve containers for weekday lunches. Pairs perfectly with a green salad or a slice of crusty bread.
Complete the Meal: For lighter starters, the Miso Soup Recipe or homemade vegetable broth work as palate-cleansers ahead. To extend the spring theme, the Carrot Ginger Soup roundup covers five sibling silky soups using the same technique. As a vegetarian main alongside or after, the Lentil Shepherd’s Pie shares the same comfort-food register. Finish on a seasonal note with the 33 Springtime Desserts collection.
Frequently Asked Questions
Can I make leek and potato soup without cream?
Yes — this recipe is specifically designed without heavy cream. The Yukon Gold potatoes break down during simmering, providing body, while whole milk adds richness without the saturated fat of cream. The heavy cream listed in the recipe is optional and only adds a final layer of richness.
What kind of potato works best for leek and potato soup?
Yukon Gold is the gold standard. Its medium starch content breaks down, giving the soup its signature silky body without becoming gummy. Russet potatoes work in a pinch, but turn fluffier and more starchy. Avoid waxy potatoes like red or fingerling — they hold their shape and prevent the soup from blending smoothly.
How do I make leek and potato soup vegan or dairy-free?
Swap the butter for olive oil or vegan butter, and replace the whole milk with unsweetened oat milk or full-fat coconut milk. Skip the optional heavy cream entirely. The potatoes still carry the body, and oat milk in particular keeps the soup tasting creamy rather than coconut-forward.
Can I freeze leek and potato soup?
Dairy-based soups can break and become grainy after freezing. For best results, freeze the blended potato-broth-leek mixture before adding the milk and cream. When you reheat, stir in fresh milk on the stovetop. The base freezes well for up to 3 months.
You Might Also Like
The base broth this soup is built on — make a big batch and freeze it for weeks of soups.
Five sibling silky soups using the same blend-and-simmer technique.
A vegetarian comfort-food main course in the same European register as this soup.
Round out the spring menu with seasonal desserts that pair with this lighter soup.
Final Thoughts
Leek and potato soup is proof that the best comfort food is often the cheapest and the easiest. The lighter milk-based version doesn’t ask you to give up the silky texture — it just gives you a bowl you can eat twice a week without thinking about it. Make a big pot on Sunday, eat it through Wednesday, and you’ll see why this soup has been a European staple for centuries.
Medical Disclaimer: The nutritional information provided in this article is for informational purposes only. While we strive for accuracy, individual responses to foods vary. Always consult with your healthcare provider or registered dietitian about dietary changes.
