Creamy Roasted Butternut Squash Soup Recipe

Summer treated us well. We planted a single butternut squash plant and ended up with more than 15 pounds of squash — a wonderful surprise and the perfect excuse to refine my favorite fall recipe: Roasted Butternut Squash Soup.

Every year I tinker with this soup, trying to make it more flavorful while keeping it simple. This year’s version is my favorite so far: easy, honest, and centered on the roasted squash itself. With minimal ingredients and a straightforward method, it highlights the natural sweetness and texture of a ripe butternut.

👨🏻‍🍳 Why it works

Instead of peeling and sautéing raw squash pieces, this method roasts whole squash halves. Roasting caramelizes the flesh, concentrating flavor and sweetness while breaking down the texture so the flesh becomes easy to scoop out. A little olive oil, salt, and pepper are all you need to coax out great flavor before blending the squash into a silky soup.

🧾 Fewer ingredients, more flavor

The roasted squash is already delicious straight from the oven. When blended with sautéed onion, garlic, a splash of chicken stock, butter, and a pinch of nutmeg, you get a warm, comforting soup that tastes richer than the ingredient list suggests.

🍲 Cooking

Start by halving the butternut squash, scooping out seeds, and rubbing the cut faces with a little olive oil, salt, and pepper. Roast face down at a high temperature until the flesh is tender and beginning to caramelize.

While the squash roasts, sauté chopped sweet onion in olive oil until soft, then add garlic for a minute to release its aroma. Scoop or scrape the roasted squash from the skins, add it to the pan, pour in most of the chicken stock, and stir in a tablespoon of butter. Finish cooking briefly so the flavors meld.

🧂 The balancing act

At this stage you’ll find the soup comes together by taste. Add freshly grated nutmeg — start with 1/4 teaspoon — and season with salt and pepper. Small adjustments to butter and stock will change the mouthfeel; a little extra butter often adds a pleasing richness.

🥣 Blend the soup

Blend until smooth using an immersion blender right in the pot or in batches in a countertop blender. If the soup is thicker than you like, add a little of the reserved stock to reach your preferred consistency. A slightly textured soup can be lovely, but fully smooth works beautifully too.

🥄 Tasting and finishing

Taste the soup and adjust seasoning. Add another pat of butter if you want extra silkiness. Finish with a garnish of fresh sage, which complements the squash’s sweetness and adds a seasonal touch.

⭐ Butternut squash facts

• In some regions, butternut squash is called the butternut pumpkin.
• Vines can spread widely, so plant butternut squash where they have room to grow.
• The skin is technically edible, and the seeds can be roasted for a snack.
• Butternut squash is rich in vitamin A and other nutrients beneficial to eye health and immunity.
• It’s often used as an early solid food for babies because of its mild, sweet taste.
• When the flesh turns deep orange, the squash is sweeter and fully ripe.
• Although called a winter squash, it is harvested in the fall and stored for use through the colder months.
• This variety was refined at the Waltham Experiment Station in Massachusetts.

Looking for more great fall recipes? Try these favorites from the kitchen: Potato and Leek Soup, Gougères (Gruyère puffs), Baked Cranberry Brie Bites with Sage, No-Knead Bread, Thanksgiving Stuffing with Fruit, Chnöpfli (Swiss mac and cheese), Mini Apple-Pear Pies, World’s Best Apple Pie, and Pumpkin Cheesecake.

📝 Recipe

Roasted Butternut Squash Soup

Author: Erich Boenzli

Summary: A simple, roasted squash soup with sautéed onions, garlic, nutmeg, and butter. Roasting concentrates the flavor, and minimal ingredients keep this soup cozy and homey.

Ingredients

• 2 pounds butternut squash, halved lengthwise and seeds removed
• 2 cups chicken stock, divided
• 1 tablespoon extra virgin olive oil (plus a small amount to rub on squash)
• 1 cup chopped sweet onion
• 2 cloves garlic, chopped
• ¼ teaspoon freshly grated nutmeg
• 1 (or 2) tablespoons butter
• Salt and pepper, to taste
• Sage leaves for garnish

Instructions

1. Preheat oven to 425°F (220°C). Cut the squash in half lengthwise and scoop out the seeds.
2. Rub the cut faces with a little olive oil and season with salt and pepper. Place the squash halves face down on a baking sheet.
3. Bake for about 50 minutes, or until the flesh is soft and easily pierced with a fork.
4. While the squash roasts, sauté the chopped onion in olive oil over medium heat until translucent, about 3 minutes.
5. Add the garlic and 1 teaspoon salt, stir frequently for about a minute until fragrant.
6. Scoop the roasted squash flesh into the pan with the onions. Add about 1½ cups of the chicken stock, the grated nutmeg, and 1 tablespoon butter. Season with pepper and more salt if needed.
7. Simmer for about 10 minutes to let the flavors meld.
8. Blend the soup until smooth using an immersion blender in the pot or in batches in a countertop blender. Add remaining stock if the soup is too thick.
9. Taste and adjust seasoning; add another tablespoon of butter if you like a richer finish.
10. Garnish with fresh sage and serve warm.

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