Thomas Keller’s Butternut Squash Soup With Brown Butter Recipe (2024)

By Amanda Hesser

Thomas Keller’s Butternut Squash Soup With Brown Butter Recipe (1)

Total Time
2 hours 15 minutes, plus refrigeration
Rating
5(4,454)
Notes
Read community notes

This soup, an adaptation of one found in Thomas Keller's "Bouchon," should be approached as a labor of love; it requires several steps (including making vegetable stock) and four hours of cooking, but the result is astonishingly flavorful and complex. Sizzling brown butter is swirled in at the very end, giving the soup a rich toasted flavor.

Featured in: THE WAY WE EAT; Labor Party

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Ingredients

Yield:Serves 6

  • 13-to-3½-pound butternut squash
  • 2tablespoons canola oil
  • Kosher salt and freshly ground black pepper
  • 2sprigs sage
  • 1cup thinly sliced leeks
  • ½cup thinly sliced carrots
  • ½cup thinly sliced shallots
  • ½cup thinly sliced onions
  • 6garlic cloves, smashed
  • 2tablespoons honey
  • 6cups vegetable stock, more if needed
  • Bouquet Garni made of 8 sprigs thyme, 2 sprigs Italian parsley, 2 bay leaves and ½ teaspoon black peppercorns, all wrapped in a packet made of 2 green leek leaves
  • ¼cup crème fraîche
  • Freshly grated nutmeg
  • 4tablespoons unsalted butter
  • 1tablespoon minced chives
  • Extra-virgin olive oil

Ingredient Substitution Guide

Nutritional analysis per serving (6 servings)

355 calories; 23 grams fat; 8 grams saturated fat; 0 grams trans fat; 11 grams monounsaturated fat; 3 grams polyunsaturated fat; 40 grams carbohydrates; 7 grams dietary fiber; 13 grams sugars; 4 grams protein; 1318 milligrams sodium

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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Thomas Keller’s Butternut Squash Soup With Brown Butter Recipe (2)

Preparation

  1. Step

    1

    Preheat the oven to 350 degrees. Line a small baking sheet with aluminum foil. Cut the neck off the squash and set it aside. Cut the bulb in half and scoop out and discard seeds. Brush each half inside and out with about 1½ teaspoons of the canola oil. Sprinkle the cavities with salt and pepper and tuck a sprig of sage into each. Place cut-side-down on the baking sheet and roast until completely tender, about 1 hour. Remove the squash from the oven and let cool, then scoop out and reserve the flesh (discard sage).

  2. Step

    2

    Meanwhile, using a paring knife, peel away the skin from the neck of the squash until you reach the bright orange flesh. Cut the flesh into ½-inch pieces (you should have about 4 cups).

  3. Put the remaining canola oil in a stockpot over medium-high heat, add the leeks, carrots, shallots and onions and cook, stirring often, for about 6 minutes. Add the diced squash, garlic, 1½ teaspoons salt, and ½ teaspoon pepper and cook gently for 3 minutes, reducing the heat as necessary to keep the garlic and squash from coloring. Stir in the honey and cook, stirring, for 2 to 3 minutes. Add the stock and bouquet garni, bring to a simmer and cook for 10 to 15 minutes or until the squash is tender.

  4. Step

    4

    Add the roasted squash and simmer gently for about 30 minutes for the flavors to blend. Remove from the heat and discard the bouquet garni. Transfer the soup to a blender, in batches, and purée. Strain the soup through a fine sieve into a bowl. Taste the soup and adjust the seasoning. Let the soup cool, then refrigerate until ready to serve.

  5. Step

    5

    Place the crème fraîche in a small chilled bowl and stir in nutmeg to taste. Whisk until the crème fraîche holds a shape. Cover and refrigerate.

  6. Step

    6

    Gently reheat the soup until just hot. If it is too thick, add a little more vegetable stock. Heat a medium skillet over high heat. When it is very hot, add the butter and rotate the skillet over the heat as necessary to brown the butter evenly, scraping up any bits that settle in the bottom. As soon as the butter is a hazelnut brown, pour it into the pot of soup -- keep a safe distance, it may sputter -- then stir.

  7. Step

    7

    Ladle the soup into six serving bowls. Top each with a dollop of crème fraîche. Grind some black pepper over the top and sprinkle on the chives. Drizzle a little olive oil over the top.

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Private Notes

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Cooking Notes

P. Howard

Finally, after many misadventures, here is a recipe for a delicious butternut squash soup! Thank you. The only change I made was in how I prepared the squash. I poked the squash with a knife then baked it at 425 degrees for 15 minutes. When cool enough to handle, I cut open the squash, removed the seeds and peel, then baked with sage etc. per instructions. The squash is much easier to cut open and peel after the short pre-baking step.

Allison

In the first step you cut the neck off the squash and only roast the bottom bulb.
The second step you are cutting the un-roasted neck bit.
(I agree, this was difficult to understand)

Isabel

I love this soup!! Pro tip: save the thick paste that comes out of straining the soup! I refrigerated it for a day or two, then mixed it with some Parmesan to make ravioli filling, and the raviolis were fantastic.

Lea

I've made a version of this soup for 25 years. All due respect to Thomas Keller, I suggest that you just split the squash lengthwise and roast the whole thing. Roasting carmelizes the squash beautifully, and when it's done and cooled, scoop out and discard the seeds, then scoop out the flesh with a spoon right into your pot of simmering stock. An immersion blender finishes it to perfection and simplifies cleanup. Eager to try it with browned butter and sage instead of my usual thyme.

Tara

Speed it up and use canned, organic butternut squash.
Same flavor, less time.

Rock on. I mean, soup's on!

Mark

This is by far the best recipe I've ever cooked from the NYT. Serve with warm crusty bread and beer brats for one of the best meals you'll ever have.

Susan Sage

I make vegetable stock with scraps I have accumulated. Put a large ziploc bag in the freezer & store all your excess veggie scraps, especially carrots, celery, onions, leeks, garlic, fennel. Other options that will distinguish each batch include tomatoes, mushrooms, peppers, spinach & kale. DO NOT use Crucifious veggies like broccoli, cauliflower, cabbage. When you have 2 gals veggies, cover with water, add herbs, boil, simmer about 2hrs & strain. Try roasting some veggies first.

Diane Kay

I never remove seeds from the bulb of the squash before roasting. I place both halved on parchment with a little oil, salt and pepper. The seeds-and-strings come out in one swoop of a spoon after roasting. You just plop them along with the parchment into the compost bucket.

Somia

This is confusing - it says to roast the squash in Step 1 and then to dice it in Step 2. Are there two squashes? If so, the recipe does not indicate that.

Nancy L

Delicious and good depth of flavor. I used a hand blender and I thought that worked well. I started to strain it, but it seemed like it would be too thin and all the good stuff left in the stainer. So I didn't stain it and it was still smooth. I liked the browned butter at the end, it adds a lot. I fiddled a lot with the bouquet garni wrapped in leek leaves...I will skip that next time. I didn't realize creme fraiche actually whips up, but it does. Everyone loved this special soup.

Lyn

I didn't go through the trouble of making vegetable broth, used chicken broth instead. I would have left out the honey, too sweet for soup. All of the ingredients made a delicious soup. Loved the garlic.

maria

Full confession: was multitasking and entertaining while making this and did not have time to chill, plus completely forgot the brown butter step AND it was still very good, with more depth than the usual butternut squash soup. Really try to caramelize the roasted squash for maximum tastiness.

Barbara Wheeler

Served this at a Christmas dinner that had family favorites (standing rib roast, individual Yorkshire puddings) but this was the big hit. The recipe is forgiving--I just made it again with extra leeks and no shallots, roasted the bulb whole with no oil or sage, and omitted the bouquet garni. Still it's one of the best soups I've ever made, and doesn't absolutely require either brown butter or creme fraiche. A not-too-fine mesh sieve comes in handy for this.

Sara G

Oh dear god, make this just the way it says. Off the hook!

Gina G

Does anyone have a stock recipe they recommend?

marg

This took more time than my usual butternut squash soup, but it was also more deeply flavored and velvety. Made as written, except for the fact that we were out of parsley for the bouquet garni and we had no chives. Will definitely make again. Very glad there wasn't a hidden camera filming me while I was making the bouquet garni out of a leek leaf. A more misshapen, unstable packet has never been created! Next time, cheesecloth, and I'll probably use a little less honey.

Juice N.

Used hot honey from Trader Joe’s and it was just the hint of spice I needed to balance out the sweet. Delicious all around!

madmad

Good, but maybe not good enough to be worth the effort. Next time I won’t bother making the homemade vegetable stock. I don’t see the point of dicing the squash “necks”. Why not just roast the entire squash? Easier and probably better.

Jorosa

I made this as written. It is absolutely delicious and worth the time. Follow the recipe the first and then add your flair (you may. It wasn’t to once you taste it). Cheers!

CC

Excellent. Roasting the squash and adding the browned butter made it special. I used only 1 teaspoon honey, not sure any was necessary. Creme fraiche might not be necessary. I didn't chill, nor strain, used an immersion blender.

Dalia

I've made this soup twice. 2nd time was a charm due to halving the amount of garlic (love garlic but 6 cloves was totally overpowering) and simplifying the recipe. I just halved and roasted the squash with sage and scooped out the flesh rather than the time consuming peeling and cutting of a raw squash. I also skipped the homemade veg stock and used "Better Than Bouillion" vegetable stock paste to season. It was just as good. Don't skip the brown butter; it's the best part!!

Canadian-A

The broth I had was from a smoked turkey and I felt like it would over power the dish, so I just used water. The soup was still excellent. Next time I’llMake sure to have a simple broth.

EN NOTE

Used two kabocha; omitted honey which was good - soup was very sweet; added about 3 cups water after using immersion blender. Delicious but sweet.

Hillary

Delicious! No fresh thyme, so used dried thyme in the bouquet garni. Immersion blender instead of food processor saved some mess. Great flavor!

Absolutely worth the effort

This is not simply a butternut squash soup. This recipe was handed down by the gods and goddess to us mortals, so we may have a taste of heaven. It is surprising that it's not written better. I roasted the squash cut in half, face side down. Then I scooped it out and added it to the stock and veggies. The browned butter and creme fraiche takes the soup to the next level.

Meira

I want to try it exactly as written sometime, but even w/mods for a weeknight it received *rave* reviews from everyone, even squash soup haters. Mods: Didn’t make vegetable stock: used water + 1-2t "better than bouillon." Subbed in labne for crème fraiche. No chives. Bouquet garni was sage + thyme -- had no parsley. Didn’t drizzle with olive oil. Used a frosted something squash from the farmers mkt rather than butternut. Didn't strain -- totally smooth thx to Vitamix blender.

Michael

I’m making this for a party and need to make it a couple of days in advance. Do people think I can add the brown butter when I make the soup or does that have to be at the time of serving? I’m not too experienced with brown butter.

Howie

This is a fantastic soup. Though I’m not sure I understand putting the soup through a fine sieve after puree in the blender. I did that and (with a little effort with a spoon to keep things moving) everything went through except some larger pieces of ground pepper. I would just skip this step in the future.

Note!

Fine to roast all the squash together and add at the same timeNo need to strain!

houston_steph

The soup is lovely but there are parts of the recipe I need clarification on. How do you get 4 cups of chopped squash out of one squash “neck”? Surely that is not right. And why add the uncooked squash to the soup at all? Why not roast it all? The roasting imparts flavor, no?I couldn’t get anything to pass through the sieve except thin liquid. I just used a handheld purée / blender (forget what those are called) and puréed it until I was satisfied with the consistency.

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Thomas Keller’s Butternut Squash Soup With Brown Butter Recipe (2024)

FAQs

Why does my butternut squash soup taste bitter? ›

Why does my butternut squash soup taste bitter? Some butternut squash is more bitter than others, which may cause your soup to taste slightly bitter. If this is the case, try adding a bit more honey.

Do you leave the skin on butternut squash for soup? ›

How to cook Butternut squash. You can eat the skin, so there's no need to peel it. Simply halve it, scoop out the seeds and chop it into chunks, then roast it and add it to a warm winter salad or throw it into curries, stews or soups.

How good is butternut squash soup for you? ›

One cup is loaded with Vitamin A, Vitamin C, Magnesium, and Potassium! Butternut Squash is filled with antioxidants which include vitamin C, vitamin E, and beta-carotene. It's shown that antioxidants can help to prevent and slow down inflammation which may lead to a reduced risk of several chronic diseases.

Why is my butternut squash soup grainy? ›

Why is my butternut squash soup grainy? Undercooked squash is the most likely culprit.

How to remove bitterness from squash soup? ›

Tips to Remove a Bitter Taste

Mix in a little bit of sugar to hide the bitterness. Add a pinch of salt to a bitter dish. Sprinkle in a pinch of baking soda. Add acidic flavors to the dish, like lemon juice or vinegar.

What reduces bitterness in soup? ›

Too Bitter

The Fix: Balance bitter flavors by introducing something salty, sweet, or sour.

Is butternut squash good for diabetics? ›

Butternut squash contains a type of fiber that's not digestible. If you have diabetes, it can help keep your blood sugar from rising after eating. Butternut squash also has a low glycemic index, which means that its carbs are digested more slowly. This also helps keep blood sugar from rising.

Why is my butternut squash turning brown when I cook it? ›

As the veggies hit the boiling water, volatile acids are released into the water and are carried away in the steam. When the pot is covered, the steam and the acids it contains are forced back into the water. Once there, the acids react with the chlorophyll in the vegetables, turning them an unsightly shade of brown.

Can I eat butternut squash raw? ›

Skip eating most hard-skinned squash raw. "Hard skinned squash is difficult to eat raw," Marz says. "They are usually much larger in size, have a harder flesh, and are much more fibrous." Examples of hard-skinned squash that should not be eaten raw include: pumpkins, delicate, butternut, Hubbard, and acorn.

Is butternut squash good for your bowels? ›

It's high in fibre which means it may contribute to a healthy gut by improving digestion and reducing constipation. It's also low in calories and packed with beta-carotene – our bodies convert this to vitamin A to support the immune system, healthy eyes and strong bones.

Is butternut squash anti inflammatory? ›

Nutritional Benefits of Butternut Squash

It contains zeaxanthin and lutein, two powerful antioxidants that support vision. Butternut Squash's high antioxidant content may have anti-inflammatory benefits, helping to reduce your risk of inflammation-related disorders like rheumatoid arthritis.

How to fix bland butternut squash soup? ›

Cook any spices in oil with your aromatics to release their flavors. If you just add spices to water or broth some compounds won't contribute as much. You can use sweet spices like cinnamon and nutmeg, or go savory with things like cumin, coriander, sumac, and cayenne.

What not to do when making soup? ›

The 7 Biggest Mistakes You Make Cooking Soup
  1. Boiling instead of simmering. You want a small bubble or two to rise to the surface of the liquid every few seconds. ...
  2. Not using enough salt. ...
  3. Ignoring water. ...
  4. Overcooking the vegetables. ...
  5. Adding tomatoes at the beginning. ...
  6. Neglecting to garnish. ...
  7. Not trying a pressure cooker.
Nov 19, 2014

Why does my butternut squash soup taste sour? ›

What happened? It's no coincidence that the butternut squash soup had fermented, alcoholic notes. Indeed, fermented rice turns out to be the culprit here. Rice is high in starch, which is relatively easy to ferment.

What is the clear stuff coming out of my butternut squash? ›

Most probably, caramelized sugars from the squash itself. The sugar and liquid inside the squash boil, expand and break the skin during cooking. It appears to be sap, used as a defensive mechanism when it's harvested too early. It may irritate your hands if you touch it.

Can butternut squash taste bitter? ›

Extreme cold, heat, drought or too much irrigation, or even a lack of plant nutrients, excessive pest infestation or disease can all create these elevated levels of cucurbitacin in the squash resulting in a bitter flavor.

How can you tell if butternut squash soup has gone bad? ›

How do you tell if Butternut Squash Soup is bad? Signs that your butternut squash soup has gone bad include a sour smell, a change in color, or visible mold. If your soup has been sitting in the fridge for longer than a week, it's probably time to toss it.

How do you get the bitter leaf taste out of soup? ›

Add enough salt (you can be generous with the salt) The more salt, the better. Pour in hot boiling water, stir and let it sit for 5 minutes. After 5 minutes, remove the leaves from the hot salty water and transfer them into cold water. This process blanches the leaves and removes the bitterness.

What happens if you eat bitter squash? ›

A study published in Clinical Toxicology in 2018 published a study from France that found 353 cases of reported adverse effects reported from eating bitter squashes. Diarrhea, vomiting, and abdominal pain were the most common symptoms.

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