Creamy Asparagus Potato Soup
Creamy asparagus potato soup turns fresh asparagus, tender potatoes, leek, and Greek yogurt into a silky, bright, budget-friendly bowl that tastes fresh and comforting.
This simple soup uses everyday ingredients and blends smoothly without heavy cream. The potatoes give it body. The Greek yogurt adds protein and a light tang. The lemon juice wakes everything up at the end.
Why You’ll Love This Recipe
- Silky texture: Potatoes blend into a creamy base without needing cream.
- Fresh flavor: Asparagus, leek, garlic, and lemon keep the soup bright.
- Simple ingredients: You only need basic produce, broth, yogurt, milk, and olive oil.
- Weeknight easy: The soup cooks in one pot and blends smooth in minutes.
Fabian’s Budget and Health Tip: Use the tender parts of the asparagus stems, not only the tips. Slice away the woody ends, then chop the rest. You get more soup from each bunch, and the stems blend beautifully with the potatoes.
Ingredients (Serves 4)
- 1 tablespoon olive oil (15 ml)
- 1 large leek, white and light green parts only, thinly sliced (about 150 g)
- 3 garlic cloves, minced (about 9 g)
- 1 pound asparagus, woody ends trimmed, chopped (450 g)
- 1 pound potatoes, peeled or scrubbed, diced (450 g)
- 4 cups vegetable broth (960 ml)
- 1 cup milk (240 ml)
- 3/4 cup plain Greek yogurt (180 g)
- 1 tablespoon lemon juice (15 ml)
- 1/2 teaspoon black pepper, plus more to finish (1 g)
Step-by-Step Instructions
1. Clean and Slice the Leek
Slice the leek lengthwise, rinse between the layers, and thinly slice the white and light green parts. Leeks can hide grit, so take a minute here. A clean leek gives the soup a sweet, gentle onion flavor without any sandy bite.
2. Sauté the Leek and Garlic
Warm the olive oil in a large pot over medium heat. Add the leek and cook for 4 to 5 minutes, stirring often, until it looks glossy and soft. Add the garlic and cook for 30 to 60 seconds. Stop when your kitchen smells savory and garlicky, before the garlic turns brown.
3. Add the Asparagus, Potatoes, and Broth
Add the chopped asparagus and diced potatoes to the pot. Pour in the vegetable broth and add the black pepper. Stir well, scraping the bottom of the pot so all the sweet leek flavor mixes into the broth.
4. Simmer Until Tender
Bring the soup to a gentle boil, then reduce the heat to a steady simmer. Cook for 15 to 20 minutes, until the potatoes break easily with a fork and the asparagus turns tender. The broth should smell fresh, green, and slightly sweet.
5. Blend Until Smooth
Remove the pot from the heat. Blend with an immersion blender until the soup looks smooth and creamy. If you use a countertop blender, blend in batches and leave room for steam to escape. The soup should look pale green and silky.
6. Stir in the Greek Yogurt and Milk
Lower the heat to low. In a small bowl, stir the Greek yogurt with a few spoonfuls of warm soup until smooth. Add this mixture back to the pot with the milk. Stir gently until the soup turns creamy. Do not boil it after adding the yogurt, since high heat can make it split.
7. Finish with Lemon and Pepper
Stir in the lemon juice. Taste the soup. Add more black pepper if you like a sharper finish. The lemon should make the asparagus taste brighter without making the soup sour.
Expert Troubleshooting and FAQs
Why did my Greek yogurt curdle?
The soup was likely too hot. Greek yogurt can split when boiled. Turn the heat to low, temper the yogurt with a few spoonfuls of warm soup first, then stir it into the pot gently.
Can I use frozen asparagus?
Yes. Add frozen asparagus straight to the pot with the potatoes and broth. It may cook a little faster, so check the potatoes for tenderness before blending.
What potatoes work best?
Yukon Gold potatoes give the creamiest texture and a buttery flavor. Russet potatoes also work well and make the soup thicker. If the soup gets too thick, stir in a splash of broth or milk.
Can I make this soup dairy free?
Yes. Use unsweetened oat milk or soy milk, and replace the Greek yogurt with a plain dairy free yogurt. Choose one with a mild flavor so it does not overpower the asparagus.
How do I store leftovers?
Cool the soup, then store it in an airtight container in the fridge for up to 3 days. Reheat it gently over low heat and stir often. Avoid a hard boil to keep the creamy texture smooth.
Estimated Nutritional Facts
Per serving, rough estimate:
- Calories: 210
- Protein: 10 g
- Carbs: 31 g
- Fats: 6 g
Creamy Asparagus Potato Soup
Ingredients
- 1 tablespoon olive oil (15 ml)
- 1 large leek, white and light green parts only, thinly sliced (about 150 g)
- 3 garlic cloves, minced (about 9 g)
- 1 pound asparagus, woody ends trimmed, chopped (450 g)
- 1 pound potatoes, peeled or scrubbed, diced (450 g)
- 4 cups vegetable broth (960 ml)
- 1 cup milk (240 ml)
- 3/4 cup plain Greek yogurt (180 g)
- 1 tablespoon lemon juice (15 ml)
- 1/2 teaspoon black pepper, plus more to finish (1 g)
Instructions
- 1. Clean and Slice the Leek. Slice the leek lengthwise, rinse between the layers, and thinly slice the white and light green parts. Leeks can hide grit, so take a minute here. A clean leek gives the soup a sweet, gentle onion flavor without any sandy bite.
- 2. Sauté the Leek and Garlic. Warm the olive oil in a large pot over medium heat. Add the leek and cook for 4 to 5 minutes, stirring often, until it looks glossy and soft. Add the garlic and cook for 30 to 60 seconds. Stop when your kitchen smells savory and garlicky, before the garlic turns brown.
- 3. Add the Asparagus, Potatoes, and Broth. Add the chopped asparagus and diced potatoes to the pot. Pour in the vegetable broth and add the black pepper. Stir well, scraping the bottom of the pot so all the sweet leek flavor mixes into the broth.
- 4. Simmer Until Tender. Bring the soup to a gentle boil, then reduce the heat to a steady simmer. Cook for 15 to 20 minutes, until the potatoes break easily with a fork and the asparagus turns tender. The broth should smell fresh, green, and slightly sweet.
- 5. Blend Until Smooth. Remove the pot from the heat. Blend with an immersion blender until the soup looks smooth and creamy. If you use a countertop blender, blend in batches and leave room for steam to escape. The soup should look pale green and silky.
- 6. Stir in the Greek Yogurt and Milk. Lower the heat to low. In a small bowl, stir the Greek yogurt with a few spoonfuls of warm soup until smooth. Add this mixture back to the pot with the milk. Stir gently until the soup turns creamy. Do not boil it after adding the yogurt, since high heat can make it split.
- 7. Finish with Lemon and Pepper. Stir in the lemon juice. Taste the soup. Add more black pepper if you like a sharper finish. The lemon should make the asparagus taste brighter without making the soup sour.
