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Potato Butternut Squash Soup

This potato butternut squash soup is the bowl I want on every cold day from October through March. You start by pressure cooking the squash and potatoes in the Instant Pot which takes about 15 minutes completely hands off. While that runs you sauté onion and garlic with cinnamon and nutmeg in a big pot, add the stock, and let it simmer. When the squash and potatoes are done you add them to the pot and blend everything together until it is completely silky and smooth. Stir in the heavy cream at the end and that is your soup. Rich, creamy, warming, and ready in under 45 minutes with minimal effort.

Cozy bowl of butternut squash and potato soup with a swirl of cream and sprinkled parsley

Growing up in California, soups were a big part of our fall and winter meals, especially my mom’s hearty creations that always filled the kitchen with warmth. These days, living in Houston, I still crave that same feeling of home, but I need quick recipes that deliver big flavor without the wait. That’s exactly what this soup does.  

With nutmeg, cinnamon, and creamy butternut squash blended with tender potatoes, this soup tastes like a warm hug on a chilly evening. As a Hispanic home cook who loves fast, flavorful recipes, this is one I’m proud to share, a modern twist on a classic comfort that fits right into busy weeknights or cozy weekend dinners.  

Why You’ll Love Butternut Squash Potato Soup

  • The Instant Pot does the hard work of cooking the squash and potatoes in 15 minutes while you build the flavor base on the stovetop at the same time. Everything comes together fast.
  • Butternut squash and yellow potatoes blended together produce a naturally thick, naturally creamy soup that tastes rich and substantial without being heavy.
  • Cinnamon and nutmeg in the background add a warmth that makes this soup taste specifically like fall without being overly spiced or sweet.
  • Heavy cream stirred in at the end adds the finishing richness that makes every bowl feel genuinely indulgent.
All ingredients shot. Butternut squash chunks quartered, yellow potatoes, butter, heavy cream, cinnamon, nutmeg, diced onion, and minced garlic

What You Need To Make Butternut and Potato Soup

The Vegetables

Four pounds of butternut squash and four small yellow potatoes are the base of the soup. The squash adds natural sweetness and a silky, slightly sweet flavor when blended. The potatoes add body, thickness, and a neutral starchiness that gives the finished soup its substantial, creamy texture.

The Aromatics and Spice

Olive oil and butter together sauté the chopped onion and minced garlic. Ground cinnamon and nutmeg add warmth. Chicken or vegetable stock is the liquid base. Heavy cream stirred in after blending adds the final richness.

How To Make Potato Butternut Squash Soup

Step 1: Pressure Cook the Vegetables

Add the butternut squash chunks and quartered potatoes to the Instant Pot. Cover about 3/4 of the way with water. Seal and pressure cook on high for 15 minutes. Quick release or let the pressure release naturally when done.

Step 2: Build the Flavor Base

While the vegetables cook heat the olive oil and butter in a large pot over medium heat. Sauté the onion for 5 minutes until softened. Add the garlic and cook for another minute. Add the cinnamon, nutmeg, salt, and pepper and stir to combine. Pour in the stock and let everything simmer on low.

Chopped root vegetables, including potatoes, sweet potatoes, and butternut squash, in an Instant Pot with water, ready for cooking a comforting Butternut and Potato Soup.
A pot with chopped onions sautéing in melted butter, topped with spices and seasoning—the perfect base for a comforting Butternut and Potato Soup; fresh cilantro lies beside the pot on a light countertop.

Step 3: Blend

Carefully transfer the cooked squash and potatoes to the pot with the onion mixture. Use an immersion blender to blend until completely smooth. Work in batches in a standard blender if needed. Stir in the heavy cream and blend briefly until silky and uniform.

A pot of Butternut and Potato Soup with large chunks of yellow squash and potatoes on a ladle, sitting in a flavorful brown broth. Fresh cilantro is placed beside the pot on a light countertop.
A pot of chunky Butternut and Potato Soup with potatoes and squash is being blended with an immersion blender, next to a bunch of fresh cilantro on a light countertop.

Step 4: Season and Serve

Taste and adjust salt and pepper as needed. Serve warm with your preferred garnishes.

Butternut squash soup in a bowl with swirl of heavy cream and garnish.
Smooth soup texture on a spoon above a bowl.

Helpful Equipment  

You’ll need an Instant Pot, an immersion blender (or regular blender), and a sturdy ladle. If you have a Dutch oven or large soup pot, it’s perfect for finishing and serving the soup.  

Storing and Reheating

Store in a sealed airtight container in the refrigerator for up to 4 days. The soup thickens slightly as it cools. Add a splash of stock or cream when reheating and stir over medium-low heat until loosened and warmed through. This soup also freezes beautifully for up to 3 months. Cool completely before freezing and thaw overnight in the refrigerator before reheating.

Delicious Variation Ideas  

  • Sweet Potato Swap. Use sweet potatoes instead of yellow potatoes for a more naturally sweet flavor.  
  • Light Cream Version. Substitute heavy cream with half and half or whole milk for a lighter option.  
  • Spiced-up Version. Add a pinch of cayenne or chili flakes for a gentle kick.  
  • Sausage Add-In. Stir in cooked, sliced sausage before serving for added protein and heartiness.  

Expert Tips for Making Butternut Squash Potato Soup  

  • Use an immersion blender directly in the pot for easy, mess-free blending.  
  • If you prefer a chunkier soup, blend only half and leave some veggies whole.  
  • Taste before serving  a final pinch of salt or an extra dash of cinnamon can make the flavors pop.  
  • Garnish with a swirl of cream or a sprinkle of toasted pepitas for presentation and crunch.  

Frequently Asked Questions  About Butternut Potato Soup

Can I make this without an Instant Pot?

Yes. You have two options. You can roast the squash and potatoes at 400°F for 30 to 35 minutes until completely tender and slightly caramelized before adding them to the pot with the onion mixture. Roasting adds a deeper, slightly sweeter flavor to the finished soup. Alternatively you can add the raw squash and potatoes directly to the pot with the stock and simmer covered for 25 to 30 minutes until fork tender. The Instant Pot is recommended for speed but either stovetop or oven method produces excellent results.

Why use both olive oil and butter?

Olive oil has a higher smoke point than butter and prevents the butter from burning during the initial sauté. Butter adds a rich, slightly nutty flavor that olive oil alone doesn’t provide. Together they produce a more flavorful base for the onion and garlic than either one used alone.

Can I use coconut cream instead of heavy cream for a dairy-free version?

Yes. Full-fat coconut cream in the same amount produces a rich, slightly tropical creaminess that actually pairs really well with the cinnamon and nutmeg in the soup. The coconut flavor is subtle and works naturally alongside the butternut squash. Unsweetened cashew cream is another excellent dairy-free alternative with a more neutral flavor.

Potato Butternut Squash Soup

This potato butternut squash soup pressure cooks squash and potatoes then blends them with sautéed onion, garlic, cinnamon, nutmeg, and heavy cream for a rich creamy fall soup ready in 40 minutes.

  • 1 cup heavy whipping cream
  • 4 pounds butternut squash
  • 4 tbsp olive oil
  • 1 tbsp unsalted butter
  • 1 small onion chopped
  • 5 cloves garlic minced
  • 4 small yellow potatoes
  • 3 cups chicken stock or vegetable stock
  • ½ tsp cinnamon ground
  • ¼ tsp nutmeg ground
  • salt and pepper to taste
  1. Start by washing 2 butternut squash chunks and quartered potatoes then place them inside your Instant Pot. Add 4-6 cups of water (3/4 of the way covered), seal the pot, and pressure cook on high for 15 minutes.
  2. While the squash is cooking, heat oil and butter in a large pot over medium heat. Add the onion and sauté for about 5 minutes, until softened.
  3. Add the garlic to the pot and sauté for another minute.
  4. Add the cinnamon, nutmeg, salt and pepper to the pot with the sautéed onions and garlic. Stir until incorporated.
  5. Add broth and let it simmer on low.
  6. Once the cooking time is up for the Butternut squash and potatoes, you can either do a quick pressure release or let the pressure release naturally.
  7. Carefully remove the cooked squash and potatoes from the Instant Pot
  8. Add the potato and squash chunks to the pot with the sautéed onions, garlic, and spices.
  9. Use an immersion blender to blend the soup until smooth. Alternatively, you can transfer the soup to a blender and blend in batches until smooth.
  • The Instant Pot makes the squash and potato prep incredibly fast but you can also roast them at 400°F for 30 to 35 minutes if you prefer. Roasting adds a slightly more caramelized, deeper flavor to the finished soup.
  • Blend the soup for a full minute until completely smooth. The longer you blend the silkier the final texture. A high-powered blender produces the smoothest result of all.
  • Add the heavy cream after blending rather than before so you can control the richness and consistency of the finished soup.
  • The cinnamon and nutmeg add warmth rather than a distinctly spiced flavor. Don’t skip them and don’t add more than the recipe calls for — they should be a background note not the dominant flavor.
Lunch, Soup
American
15-minute, Instant Pot, Soup

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