Silky Asparagus and Leek Soup with Creme Fraiche

Creamy asparagus and leek soup, topped with a small spoonful of crème fraîche, is one of my favorite spring soups. Leeks—relatives of onions, scallions, and shallots—add a gentle, sweet onion flavor that pairs beautifully with tender asparagus to create a smooth, savory finish.

Cream of Asparagus Leek Soup with Crème Fraîche

Celebrating spring with something green: this velvety soup is bright, comforting, and surprisingly simple to prepare. It’s perfect for St. Patrick’s Day or any time you want a light, elegant starter or a satisfying lunch. The combination of sautéed leeks, garlic, and asparagus simmered in reduced-sodium chicken broth results in a delicate vegetable broth that blends into a silky texture. A teaspoon of crème fraîche per serving adds richness without overwhelming the fresh vegetable flavors.

Why this soup works

Asparagus cooks quickly and has a naturally grassy, slightly sweet taste that harmonizes with the mild, creamy character of leeks. Sautéing the leeks in butter first develops a mellow sweetness, while a brief simmer in broth softens the asparagus and makes it easy to purée into a smooth soup. Crème fraîche brings a gentle tang and creamy mouthfeel that finishes each bowl elegantly.

Ingredients

2 lbs asparagus (about 2 bunches), tough ends snapped off
1 tbsp butter
4 leeks (white and pale green parts only), halved lengthwise and sliced thin
2 cloves garlic, minced
32 oz container + 1 cup reduced-sodium chicken broth
2 tbsp crème fraîche (plus 1 tsp per serving for garnish)
Kosher salt and fresh ground black pepper, to taste
Optional: chopped chives for garnish

Yield and times

Yield: 5 servings (about 7 1/3 cups)
Prep time: 5 minutes · Cook time: 40 minutes · Total time: 45 minutes

Instructions

In a large heavy pot over medium-low heat, melt the butter.
Add the sliced leeks and cook, stirring occasionally, until they are soft and translucent, about 8–10 minutes. This gentle cooking brings out the leeks’ natural sweetness.
Add the minced garlic and sauté for about 1 minute, until fragrant but not browned.
Trim and chop the asparagus into 2-inch pieces and add them to the pot with the leeks and garlic.
Pour in the chicken broth, bring the mixture to a boil, then reduce the heat. Cover and simmer until the asparagus is very tender, about 20–25 minutes.
Remove the pot from the heat. Using an immersion blender or working in batches with a countertop blender, purée the soup until smooth and silky. If the soup seems too thick, add a bit more broth or water to reach your desired consistency.
Taste and adjust seasoning with kosher salt and freshly ground black pepper.
To serve, divide the soup among five bowls. Add about 1 teaspoon of crème fraîche to each bowl and garnish with chopped chives if desired.

Variations and substitutions

If crème fraîche is not available, you can substitute sour cream or plain Greek yogurt for a similar creamy finish.
For a dairy-free version, skip the crème fraîche or use a dairy-free yogurt alternative; the soup will still be flavorful thanks to the leeks and asparagus.
To make the soup vegetarian, substitute vegetable broth for the chicken broth.

Serving suggestions

This soup is lovely on its own or paired with crusty bread, a simple green salad, or a light fish dish. Serve warm, and add a little extra crème fraîche or a drizzle of good olive oil just before eating for an elegant touch.

Nutrition (per serving)

Calories: 141 kcal · Carbohydrates: 20 g · Protein: 7 g · Fat: 5 g · Saturated fat: 1.5 g · Cholesterol: 14 mg · Sodium: 476 mg · Fiber: 5 g · Sugar: 4 g

Tips

Trim leeks carefully and rinse well to remove any grit trapped between the layers.
When blending hot liquids in a countertop blender, vent the lid slightly and blend in small batches to avoid pressure buildup.
Adjust the amount of crème fraîche or other dairy to match your preferred richness; a little goes a long way.

More soups to try

Cream of broccoli soup
Potato leek soup
Carrot ginger soup
Cheddar corn chowder with bacon
Creamy cauliflower soup

If you make this soup, note what you changed or enjoyed—small tweaks like a squeeze of lemon or a sprinkle of fresh herbs can make it your own. Enjoy a bowl of bright, seasonal flavor.