Butternut Squash Soup (Roasted, Velvety & Dairy-Optional)
This butternut squash soup recipe roasts the squash first, then blends it into a velvety soup in about an hour. Roasting beats boiling because it concentrates the squash's natural sweetness instead of watering it down, and the method works whether you keep it dairy-free or stir in cream.
What Makes This Recipe Work
Roasting the squash cut-side down caramelizes the edges and steams the flesh in its own skin, which gives the finished soup a deeper flavor than boiled squash and a naturally thick, smooth body.
Ingredients for Butternut Squash Soup (Roasted, Velvety & Dairy
- 1 medium butternut squash (about 3 lb / 1.4 kg), halved and seeded
- 1 tbsp olive oil, plus more for drizzling
- 1 tbsp butter or coconut oil
- 1 medium yellow onion, chopped
- 3 garlic cloves, minced
- 4 cups (950 ml) chicken or vegetable broth
- 1/2 cup (120 ml) heavy cream or full-fat coconut milk (optional)
- 1 tsp fresh sage, chopped, or 1/4 tsp dried sage
- 1/2 tsp salt, plus more to taste
- 1/4 tsp black pepper
- 2 tbsp grated parmesan (optional)
How to Make Butternut Squash Soup (Roasted, Velvety & Dairy
- Heat the oven to 400°F (200°C), brush the cut sides of the squash with olive oil, and set them cut-side down on a lined sheet pan.
- Roast 35 to 40 minutes until a knife slides through the flesh with no resistance and the edges are browned.
- Meanwhile, melt the butter in a large pot over medium heat, add the onion, and cook 5 minutes until soft; add the garlic and sage and cook 30 seconds more.
- Scoop the roasted squash flesh into the pot and discard the skin.
- Add the broth, salt, and pepper, bring to a simmer, and cook 10 minutes so the flavors blend.
- Blend with an immersion blender until completely smooth, or transfer in batches to a blender and blend with the lid vented.
- Stir in the cream if using, warm through for 2 minutes without boiling, taste, and adjust the salt before serving.
Tips for the Best Butternut Squash Soup (Roasted, Velvety & Dairy
- Roast until a knife slides in with no resistance; under-roasted squash makes a thin, pale soup.
- Let the soup simmer before blending so the flavors come together.
- For a thicker soup, simmer uncovered a few extra minutes before blending.
- A high-speed blender gives the silkiest result; fill it only halfway and vent the lid to let steam escape.
Variations and Substitutions
- Curried butternut squash soup: add 1 tbsp curry powder with the garlic, then finish with a squeeze of lime.
- Apple and sage: add 1 chopped apple to the pot with the onion and simmer until tender before blending.
- Dairy-free: swap the cream for full-fat coconut milk and skip the parmesan.
- For a pumpkin version of the same method, use our pumpkin soup; the roasting time and broth amount are nearly identical.
How to Store and Reheat
- Refrigerate in a sealed container for up to 5 days and reheat gently over medium heat.
- Freeze without the cream for up to 3 months; thaw overnight, reheat, then stir the cream in at the end.
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Butternut Squash Soup (Roasted, Velvety & Dairy FAQ
Should you roast or boil butternut squash for soup?
Roast it. Boiling adds water and dilutes the flavor, while roasting at 400°F caramelizes the sugars and concentrates them, giving the soup a richer taste and a thicker body.
Can you make butternut squash soup ahead of time?
Yes, and it often tastes better the next day as the flavors settle. Cool it within 2 hours, refrigerate for up to 5 days, and rewarm it gently over medium heat.
Can you freeze butternut squash soup?
Yes, it freezes well for up to 3 months. Freeze it before adding cream, then thaw it overnight and stir the cream in when you reheat.
How do you thicken butternut squash soup?
Simmer it uncovered for 5 to 10 minutes so some liquid cooks off, or blend in a cooked potato. The roasted squash is already starchy, so the soup thickens as it cools.
What can you add to butternut squash soup?
Apple, curry powder, fresh sage, ginger, and a pinch of cayenne all pair well. A swirl of cream or coconut milk and toasted seeds on top finish the bowl.
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