Roasted Butternut Squash Soup Recipe

Roasted Butternut Squash Soup

This roasted butternut squash soup starts where most squash soups stop: roasting the squash first until the edges caramelize and the flesh turns sweet and nutty, then blending it silky-smooth with onion, garlic, and a whisper of warm spices. The result is a velvety, golden winter soup that’s sweet, savory, and deeply comforting — and it all comes together in one pot once the roasting is done.

The trick is giving the squash enough time and space in the oven — spread it in a single layer so it roasts instead of steaming, and let the edges brown. That caramelization is where the flavor comes from; the blender and a splash of cream just finish what the oven started. A pinch of nutmeg and cinnamon keeps it warm and autumnal without turning it into dessert.

Prep time: 15 minutes Cook time: 45 minutes Servings: 6

What You’ll Need

• Rimmed baking sheet
• Stockpot
• Immersion blender

Roasting the squash on a sturdy sheet pan and finishing the soup in a good pot is all this recipe needs — see our best stock pot for soup guide for a stockpot that handles one-pot soups like this one.

Ingredients

• 1 large butternut squash (about 3 lbs / 1.4 kg), peeled, seeded, and cut into 1-inch cubes
• 2 tablespoons olive oil
• 1 teaspoon kosher salt, divided, plus more to taste
• 1/2 teaspoon black pepper
• 1 tablespoon unsalted butter
• 1 medium yellow onion, diced
• 2 cloves garlic, minced
• 1 teaspoon grated fresh ginger (or 1/2 teaspoon ground ginger)
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon ground cinnamon
• 4 cups low-sodium vegetable or chicken broth
• 1/2 cup heavy cream (or full-fat coconut milk)
• 1 tablespoon maple syrup (optional, if your squash isn’t very sweet)
• Toasted pumpkin seeds (pepitas) and fresh thyme leaves, for topping

Instructions

1. Roast the squash. Preheat the oven to 400°F (200°C). Toss the squash cubes with the olive oil, 1/2 teaspoon of the salt, and the pepper on a rimmed baking sheet, spreading them in a single layer. Roast for 30–35 minutes, turning once halfway through, until tender and caramelized at the edges.
2. Sauté the aromatics. While the squash roasts, melt the butter in a stockpot over medium heat. Add the onion and cook until soft and translucent, about 5 minutes. Stir in the garlic and ginger and cook 1 minute more, until fragrant.
3. Add the spices. Stir in the nutmeg and cinnamon and cook for 30 seconds, stirring constantly, until the spices smell warm and toasty. This quick bloom in the butter wakes the spices up before the liquid goes in.
4. Combine and simmer. Add the roasted squash and the broth to the pot, scraping up any browned bits. Bring to a gentle boil, then reduce the heat to medium-low and simmer for 10 minutes so the flavors meld.
5. Blend until silky. Remove the pot from the heat and blend with an immersion blender until completely smooth and velvety, about 2–3 minutes. Work in slow, steady passes and tilt the blender to catch any chunks hiding at the edges.
6. Finish with cream. Stir in the heavy cream and taste. Add the maple syrup if the soup needs a little more sweetness, and adjust the salt and pepper. Warm over low heat for 2–3 minutes — don’t let it boil.
7. Serve. Ladle into bowls and top with toasted pumpkin seeds, a drizzle of cream, and a few fresh thyme leaves. Serve hot with crusty bread or a grilled cheese.

Tips for the Best Roasted Butternut Squash Soup

• Don’t crowd the baking sheet. Squash cubes need space to roast and caramelize; if they’re piled up, they’ll steam and stay pale. Use two sheet pans if needed — the browned edges are where the flavor lives.
• Blend longer than you think. A truly silky soup needs a full 2–3 minutes with the immersion blender. If it still feels grainy, add a splash more broth and keep blending until it coats the back of a spoon.
• Freezer-friendly. This soup freezes beautifully — cool it completely, then freeze in portions for up to 3 months. Thaw overnight in the fridge and reheat gently on the stove, stirring in a splash of cream or broth to loosen it back up.

Sweet, silky, and warmed with spice — this roasted butternut squash soup is the easiest way to make winter taste like fall.