Name: Creamy Butternut Squash Soup (One Pot)
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Ingredients: 2 1/2 lb butternut squash, peeled, seeded, and cut into cubes (about 8 cups); 1 red bell pepper, roughly chopped; 1 medium yellow onion, roughly chopped; 3 cloves garlic, smashed; 7 cups water; 1 tbsp salt, plus more to taste; 2 tbsp sugar; 3/4 cup heavy cream, plus a little extra for drizzling; 1 tsp chopped fresh thyme (or 1 tsp curry powder)

Can butternut squash soup come out silky and bright orange without the squash ever seeing the oven? This one-pot butternut squash soup does it, with the squash, a red bell pepper, an onion, and garlic all simmered together in salted, lightly sweetened water.

The step I won’t rush is the simmer. I give it the full 35 minutes with the lid on, then press one cube against the side of the pot with a fork.

If it collapses with no push back, the pot is ready for the blender. Squash that still holds a firm center won’t blend as smooth.

Everything after that goes quickly. The cream goes in once the soup is smooth, then thyme or curry powder, and a last taste for salt.

Prep: 15 minutes · Cook: 35 minutes · Total: 50 minutes · Serves: 6 to 8

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How do you make butternut squash soup without roasting the squash?

Put 2 1/2 pounds of cubed butternut squash in a pot with a red bell pepper, an onion, garlic, and 7 cups of salted, lightly sweetened water. Bring it to a boil, cover, and simmer for 35 minutes, until a fork crushes the squash. Blend it smooth, then stir in heavy cream and thyme.

What Makes It Work

Simmering everything in one covered pot for 35 minutes, the timing Once Upon a Chef uses, cooks the squash cubes soft all the way to the center, so the blender has nothing firm left to break up.
The water is seasoned at the start with 1 tablespoon of salt and 2 tablespoons of sugar, so the squash, pepper, and onion cook in seasoned liquid instead of getting salted only at the end.
The cream goes in after blending and only comes up to a gentle simmer. Spend With Pennies adds its cream at the same point, after the soup is puréed.

I lift the lid at the 35-minute mark and press a cube from the middle of the pot. When it slumps into a soft orange smear under the fork, I turn off the heat and get the blender out.

Why I Keep Coming Back to This One

One pot and no oven, so the stovetop does all the cooking.
The shopping list is short: squash, a red bell pepper, an onion, garlic, and heavy cream, plus salt and sugar from the pantry.
The soup freezes for up to 3 months as long as the cream stays out until reheating.
It goes from cutting board to bowls in about 50 minutes and feeds 6 to 8.

Ingredients for Butternut Squash Soup

2 1/2 lb butternut squash, peeled, seeded, and cut into cubes (about 8 cups)
1 red bell pepper, roughly chopped
1 medium yellow onion, roughly chopped
3 cloves garlic, smashed
7 cups water
1 tbsp salt, plus more to taste
2 tbsp sugar
3/4 cup heavy cream, plus a little extra for drizzling
1 tsp chopped fresh thyme (or 1 tsp curry powder)

Picking the Right Ingredients

Two and a half pounds of butternut squash comes to about 8 cups of cubes, and the 7 cups of water are measured against that weight. A much bigger squash gives a thicker soup, so I weigh the cubes after peeling whenever I can.

The red bell pepper and the 2 tablespoons of sugar both lean the soup sweet. The tablespoon of salt sounds like a lot, but it’s spread across 7 cups of water and a full pot of vegetables, and it keeps that sweetness in balance.

Heavy cream gives the soup its body, and it softens the orange to a lighter shade. For the last flavor I go back and forth between a teaspoon of fresh thyme and a teaspoon of curry powder, and I haven’t picked a favorite yet.

Step-by-Step Directions

Prep the squash. Peel the butternut squash with a sturdy vegetable peeler, halve it lengthwise, and scoop out the seeds. Cut the flesh into cubes of roughly the same size, about 8 cups, so every piece softens at the same pace.
Fill the pot. Put the squash, bell pepper, onion, and garlic into a large pot. Pour in the 7 cups of water, add the salt and sugar, and stir until the salt and sugar dissolve and the vegetables are settled into the water.
Bring to a boil. Set the pot over high heat, uncovered, and bring it to a full boil. You’re there when big bubbles break across the whole surface of the water, not only around the edges of the pot.
Simmer covered. Turn the heat down, cover the pot, and simmer for 35 minutes. The squash is ready when a cube pressed against the side of the pot with a fork collapses completely, with no firm bite left in the center.
Blend in the pot. Turn off the heat. Purée the butternut squash soup right in the pot with an immersion blender, keeping the blade under the surface so it doesn’t splatter. Stop when no flecks of squash or pepper remain and the soup looks glossy.
Or blend in batches. If you’re using a countertop blender, work in batches. Remove the small center cap from the lid and hold a folded kitchen towel over the opening so steam can escape. Blend each batch until it’s completely smooth.
Add the cream. Return all the soup to the pot, stir in the heavy cream, and warm it over low heat at a gentle simmer. It’s ready when a few slow bubbles rise at the edges and the color is even, with no white streaks.
Season and serve. Stir in the thyme or curry powder, then taste a spoonful and add salt if it tastes flat. Ladle it into bowls and drizzle a little extra cream over each one in a thin ribbon.

What I’ve Learned Making This Butternut Squash Soup

Cut the squash cubes close to the same size. Small pieces turn soft long before big ones, and the big ones are the ones you’ll test with the fork.
Keep the blender vented when the soup is hot. Steam builds fast in a sealed jar, and it can push the lid right off.
Stick to one cooking method. Another version roasts the squash at 400°F for about an hour and calls for 4 cups of broth instead of 7 cups of water, so stick to one method.
Hold back the cream from any portion you’re planning to freeze. It goes in when that soup is reheated.

How to Store It

Leftover soup keeps in an airtight container in the fridge for up to 3 days. Some versions allow 4 days, but I stick with the shorter window.

Once Upon a Chef freezes this soup for up to 3 months, and both classic sources agree it goes into the freezer before the cream. When I know part of the pot is headed there, I ladle that portion out right after blending.

To serve frozen soup, thaw it in the fridge for 12 hours. Reheat it in a pot over medium heat until it’s steaming, then stir in the cream and let it come to a gentle simmer before ladling it into bowls.

What Goes With Butternut Squash Soup

Grilled cheese sandwiches, because crisp buttered bread is made for dipping into a smooth soup.
A green salad with a sharp vinaigrette, which cuts through the cream between spoonfuls.
Thick slices of toasted crusty bread for wiping out the last of the bowl.

What I Use to Make This

A large pot with a tight-fitting lid, big enough to hold about 8 cups of squash and 7 cups of water with room left at the top.
An immersion blender, or a countertop blender with a removable center cap in the lid so steam can escape.
A sturdy vegetable peeler that can get through thick squash skin without slipping.
A large chef’s knife and a cutting board that stays put, since raw butternut squash is dense and hard to cut.

FAQ

Do you have to roast butternut squash for soup? No. This version simmers the raw cubes in a covered pot for 35 minutes until they’re soft enough to blend smooth. Other versions roast the squash at 400°F for about an hour first, which takes longer and uses a different amount of liquid.

Can you freeze butternut squash soup? Yes, for up to 3 months. Freeze it before the cream goes in, then thaw it in the fridge for 12 hours and stir in the cream while it reheats.

What can I use instead of thyme? Use 1 teaspoon of curry powder in place of the teaspoon of fresh thyme. Both classic sources list curry powder as an option for this soup.

How many people does one pot feed? This pot serves 6 to 8. A roasted version that uses 4 cups of broth makes a smaller batch that serves 4.

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