Roasted Butternut Squash Soup

Roasting the squash first is what makes this soup taste like fall in a bowl. The edges caramelize in the oven, the flesh turns sweet and tender, and then everything blends with sauteed onion, garlic, and a splash of cream into a smooth, golden soup. It is simple enough for a weeknight and polished enough to open a Thanksgiving meal, especially with a swirl of cream and a handful of toasted pepitas on top.

If you love cozy bowls, you will also enjoy our Greek Lemon Chicken Orzo Soup and our Loaded Baked Potato Soup — both are comforting, spoon-friendly soups that pair well with crusty bread.

Photo credit: Pexels, photo 5605560 by Nataliya Vaitkevich (Pexels license, free to use, no attribution required).

Why This Recipe Works

• Roasting builds flavor: High oven heat caramelizes the squash, so the soup tastes sweet and deep rather than flat or watery.
• A smooth, reliable blend: Soft roasted squash plus warm broth blends into a silky texture without a long simmer.
• Balanced seasoning: Onion, garlic, a little thyme, and a pinch of nutmeg keep the sweetness grounded and savory.
• Easy to finish your way: Cream, toasted pepitas, or a swirl of olive oil let each bowl look and taste a little special.

Ingredients

• 1 large butternut squash (about 3 lb / 1.4 kg), peeled, seeded, and cut into 1-inch cubes
• 2 tbsp (30 ml) olive oil
• 1 medium yellow onion (about 150 g), chopped
• 3 garlic cloves, minced
• 4 cups (960 ml) low-sodium vegetable broth
• 1/2 cup (120 ml) heavy cream
• 1 tsp fresh thyme leaves (or 1/2 tsp dried thyme)
• 1/4 tsp ground nutmeg
• 3/4 tsp kosher salt, plus more to taste
• 1/4 tsp black pepper
• 3 tbsp (30 g) toasted pepitas, for topping
• Fresh rosemary sprigs, for topping (optional)

Photo credit: Pexels, photo 5605576 by Nataliya Vaitkevich (Pexels license, free to use, no attribution required).

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How to Make Roasted Butternut Squash Soup

1. Roast the squash. Heat the oven to 400°F (200°C). Toss the squash cubes with 1 tablespoon of the olive oil, salt, and pepper, spread them on a sheet pan, and roast for 30 to 35 minutes, turning once, until tender and browned at the edges.
2. Soften the aromatics. Warm the remaining olive oil in a large pot over medium heat. Cook the onion for 5 to 6 minutes until soft, then stir in the garlic and thyme and cook for 1 minute more.
3. Simmer and blend. Add the roasted squash and the broth, bring to a gentle simmer, and cook for 5 minutes. Blend in batches (or with an immersion blender) until completely smooth, then stir in the cream and nutmeg.
4. Season and serve. Taste and adjust the salt and pepper. Ladle into warm bowls and top with toasted pepitas and rosemary, if using.

Tips

• Cut even cubes: Pieces of similar size roast at the same rate, so no part turns mushy while another stays firm.
• Do not crowd the pan: Spread the squash in one layer so it roasts and browns instead of steaming.
• Blend carefully: Hot soup expands in a blender, so fill the jar only halfway, hold the lid down with a towel, and blend in batches.
• Thin it to your liking: Add broth a splash at a time if the soup thickens as it sits; it should pour in a slow, silky ribbon.

Storage

Refrigerate leftovers in an airtight container for up to 4 days; reheat gently over medium-low heat, adding a splash of broth if the soup has thickened. For longer storage, freeze the soup without the toppings for up to 3 months, thaw overnight in the refrigerator, and reheat until steaming, then add fresh pepitas and herbs.

Frequently Asked Questions

Can I use frozen butternut squash?

Yes. Use about 2 lb (900 g) of frozen cubed squash, roast it straight from frozen until tender and lightly browned, and add 5 extra minutes to the roasting time if needed.

Do I have to peel the squash?

Peeling gives the smoothest texture, so it is worth the few minutes. A sturdy vegetable peeler works well; cut the squash into rings first if the whole squash feels hard to handle.

How do I make this soup dairy-free?

Swap the heavy cream for full-fat coconut milk or an oat-based cream and check that your broth is dairy-free. The soup stays silky, with a slightly different background flavor.

What should I serve with it?

Crusty bread, grilled cheese sandwiches, or a simple green salad all work well. For a Thanksgiving table, serve small cups as a starter before the main meal.