Slow-Cooker Cauliflower, Potato and White Bean Soup Recipe (2024)

By Sarah DiGregorio

Slow-Cooker Cauliflower, Potato and White Bean Soup Recipe (1)

Total Time
8 hours and 25 minutes
Rating
4(7,301)
Notes
Read community notes

This creamy vegetarian soup is built on humble winter staples, but the addition of sour cream and chives make it feel special. (Crumble a few sour-cream-and-onion chips on top to take the theme all of the way.) It takes just a few minutes to throw the ingredients into the slow cooker, and the rest of the recipe almost entirely hands-off, making it very doable on a weekday. Use an immersion blender, if you have one, to purée it to a silky smooth consistency, but a potato masher works well for a textured, chunky soup.

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Ingredients

Yield:6 servings

  • 1pound Yukon gold potatoes, scrubbed, peeled and cut into 1- to 2-inch chunks
  • 1pound cauliflower, chopped into large bite-sized florets and stems
  • 2(15-ounce) cans cannellini beans, drained
  • ½yellow onion, minced
  • 3garlic cloves, smashed and minced
  • cups vegetable stock
  • 3tablespoons unsalted butter
  • 2tablespoons dry white wine
  • 1sprig fresh thyme or ½ teaspoon dried thyme
  • ½teaspoon garlic powder
  • Coarse kosher salt and black pepper
  • 1teaspoon lemon juice (about ¼ lemon)
  • 8ounces sour cream (1 cup), at room temperature
  • ½cup chopped chives (about 1 small bunch)
  • Potato chips, preferably sour cream and onion, for topping
  • Shredded Cheddar, for serving

Ingredient Substitution Guide

Nutritional analysis per serving (6 servings)

402 calories; 16 grams fat; 9 grams saturated fat; 0 grams trans fat; 4 grams monounsaturated fat; 1 gram polyunsaturated fat; 52 grams carbohydrates; 11 grams dietary fiber; 4 grams sugars; 16 grams protein; 1158 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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Slow-Cooker Cauliflower, Potato and White Bean Soup Recipe (2)

Preparation

  1. In a 6- to 8-quart slow cooker, combine the potatoes, cauliflower, beans, onion, garlic, vegetable stock, butter, wine, thyme, garlic powder and 1½ teaspoons kosher salt. Cover and cook until the vegetables are very tender, about 8 hours on low.

  2. Step

    2

    Remove and discard the thyme sprig, and turn off the slow cooker. Add the lemon juice. To make a completely smooth and creamy soup, purée the ingredients using an immersion blender. (Or, purée the soup in a blender in two batches, transferring the puréed soup to a different pot.) To make a textured, chunky soup, smash the ingredients using a potato masher in the slow cooker. Stir in the sour cream and chives. Taste and add additional salt if necessary. Serve in bowls topped with black pepper, crushed potato chips and shredded Cheddar. For leftovers, gently reheat the soup on the stovetop or in the microwave until it just barely bubbles around the edges; don’t let it boil or the sour cream will break.

Ratings

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7,301

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Private Notes

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Cooking Notes

LD

Easy convert to instant pot. I sautéed the onion and garlic in the butter and then deglazed with the wine. Added cauliflower, potatoes, beans and broth. Pressure cooked on high for 18 minutes, quick release. Seasoned more aggressively adding some smoked paprika and more garlic powder at the end. Added lemon at the end. Puréed beautifully and didn’t require a full day on slow cooker. Really tasty- I love the creaminess from the beans. Will make again for sure!

Jeannie

Delicious. Comforting. I sub Greek yogurt for sour cream whenever possible. If you add it to the soup in bowls, you can reheat leftovers without separation.

MickyC

Anyone have an idea on about how long the timing would be for a stove top ole fashioned method of cooking this? Thank you!

Lisa S.

I did this QUICKLY and simply on stovetop and it came out great. Just threw everything in a pot (except chives, sour cream, and chips) and I used low sodium chicken broth (had on hand). Brought to a boil and then simmered for about an hour til veggies were tender. Took off heat and puréed in pot with an immersion blender. Doesn’t even need sour cream or chives (my garden ones had died for the winter!). Yum and healthy.

Katie

Converted to stovetop. Sautéed onions and garlic first, then added potatoes then wine then broth and herbs. Added rosemary and thyme. Roasted the cauliflower in the oven at 400 for 30 mins then added it and cooked 30 mins more. Added the beans when I added the cauliflower. Was absolutely outstanding

Heather

This just sounded like something I would want to eat again later so I doubled the batch. I used bone broth instead of the veggie broth. And I love garlic, so I used an entire head, that I chopped up,and sautéed it for a bit first. I used 1/2 Greek yogurt and 1/2 sour cream. I also cooked and cut up applewood bacon along with cheddar cheese, sour cream, scallions and chives and of course the suggested sour cream and onion potato chips. The soup needs the toppings or it’s a bit bland.

Lane

I just made this on the stove in my Dutch oven. I had a 1.5 pound golden cauliflower so used equal potatoes by weight, more stock and wine, a rosemary sprig from the garden ( last one I think), topped with yogurt and scallions. i did add a bit of sweet smoked paprika and a dash of Aleppo. Rave reviews!

CCNye

I soaked a pound of dried beans overnight , and also added carrots, celery, and parm rind. Added extra broth so beans and vegetables were covered. Used potato masher so it would be a little chunky. Delicious!

Sue

Try vegan sour cream. Forager makes a good one, but there are many brands on the market.

Liz L

Made this stovetop and it’s DELICIOUS. In case anyone else doesn’t have a crockpot:- Sautéed onions in butter until translucent- added garlic, sautéed until fragrant,- added wine and sautéed for a minute - added all ingredients and simmered for ~ 1 hr - only change I made was using almost 6c of veggie stock (I used very diluted stock given the other salt, but that’s a preference)It was so good by itself I almost didn’t add the sour cream. But that would have been a miss. This is heaven.

Randy Ash

I did it on stove. brought ingredients to boil, turned down to medium for about 30 minutes of a moderate boil, then down to simmer for about an hour before pureeing. Otherwise followed recipe to the letter--wonderful results. Would serve to guests with great anticipation. A definite keeper. Although I skipped the chips and cheese for garnish in favor a dollop of sour cream and some chives.

Liz

Since it cooks for 8 hours, is it possible to use dried beans that have been soaked overnight, rather than canned?

gina

To make this dairy free use homemade cashew cream or a store bought vegan sour cream like Tofutti Sour Cream.

Ryan

Easy convert to instant pot. I sautéed the onion and garlic in the butter and then deglazed with the wine. Added cauliflower, potatoes, beans and broth. Pressure cooked on high for 18 minutes, quick release. Seasoned more aggressively adding some smoked paprika and more garlic powder at the end. Added lemon at the end. Puréed beautifully and didn’t require a full day on slow cooker. Really tasty- I love the creaminess from the beans. Will make again for sure!

Trudi

Haven't made this, yet, but will! Can this be adapted to an InstPot? If not, I will make is it the old fashioned way - stove top!

lisa

Great flavor and very filling. Followed user’s pressure cooker directions (18 min on high with release) and used Greek yogurt instead of sour cream. Dusty loved

sammo

I didn’t love the bean flavor in this. Would def add the beans after puréing if I made it again because otherwise it was a lot of mushiness. As a small soup course it might be ok, but if you’re looking to make a meal, def want some texture remaining.

KoryJaxn

I made this as written except I used vegan butter, sour cream and cheese. It is amazing. I agree that the potato chips are not needed but love the chives on top. I cooked on high in my crockpot since I was pressed for time and it turned out fantastic! Will definitely make again.

mel

Was excited for this recipe and made a day in advance so the flavors could meld. Not a fan. Two changes, I didn’t have chives and I roasted the cauliflower. Don’t think these changes added to dislike The lemon felt overpowering and although I ate for two meals, I tossed the rest.

Rachel

I added more spices as I usually do for recipes: smoked paprika, rosemary, sage, and mustard. Added red pepper flakes as a garnish for a little heat. Delicious! I also followed the Instant Pot instructions in the comments and those worked very well. Will make again.

augusta

Tried this and decided to make the second half of the last step a DYI, setting out chives, Greek yogurt, and shredded cheddar. Also, at the risk of being condemned for vulgarity, French fried onions a la Durkee, which turned out to be a are a very tasty garnish on the blended version.

Banana

Great meal prep recipe. I used chicken stock for some protein… & when reheating added 2 handfuls of baby spinach— happy random addition. Of ate with cheese and dairy stuff (I had greek yogurt).

Joyce D.

My crock pot quit working the day I tried this soup. Stovetop worked fine. I didn't feel the potato chips and cheddar were necessary (unless, maybe you're entertaining). It was delicious anyway! I hope it freezes well. The recipe makes a huge amount for one person.

Mike Ouellet

I cooked it on the stove top for 2-3 hours on very low heat. Turned out great

Cyn Lanners

Used the instant pot to make this, per directions others provided. Found it a bit unexciting but on our second night eating this I added some Italian chicken sausage that I cut up and sautéed. Very satisfying.

micah

Half the beans. Needs the toppings but good and filling

Sarah

“It’s like eating the edges of paper.” That was my husband’s assessment of this recipe. My assessment - so very bland, as many commenters have stated. I made it exactly as written. Then I did everything I could think of to keep it alive (including adding kielbasa, more wine, and more love), but alas: this was a DOA recipe for us.

Jo Ann

Love that it can be made in the crockpot without any other preparation. Due to dietary restrictions I used vegan sour cream, sweet potatoes for white potatoes, no garlic powder, and only 1 garlic clove, and 1 tbs of chopped onion. I found it tasty. Might crumble some bacon on top when serving next time.

RCM

I made this over the stove top. It worked out well, but I had to add more broth than the recipe called for

Matthew

Great recipe! the only change I made was to saute the onions and garlic first, deglaze with the wine and then add everything into the crockpot. used a bit less than 8oz sour cream, dried chives and it turned out delicious.

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Slow-Cooker Cauliflower, Potato and White Bean Soup Recipe (2024)

FAQs

Does soup taste better in slow cooker? ›

Slow cookers can transform a few simple ingredients into the most delicious soups by simmering them for hours. This low and slow cooking allows the flavors to mingle, creating rich, flavorful soups perfect for chilly days, nights, or any day you want to enjoy a bowl full of goodness.

How do you thicken cauliflower soup? ›

How to thicken cauliflower soup: Nobody wants an overly-thin soup. We thicken our cauliflower soup by blending the entire soup in batches using a blender or immersion blender once cooked. This (in addition to our heavy cream) helps thicken our soup up nicely to a hearty texture.

How do you thicken white bean and ham soup? ›

You can use flour, cornstarch, arrowroot or potato starch as a thickening agent; whisk up to 4 tablespoons with a cup of hot broth and add it to the pot. You can use a slurry in conjunction with a roux but in that case, choose a starch for the slurry other than flour.

How to thicken potato soup recipe? ›

Combine cornstarch and a little bit of water—or the chicken stock from the soup—in a small bowl. With the soup simmering over medium-low heat, whisk in the slurry. The soup should start to thicken almost immediately.

How can I deepen my soup flavor? ›

Here are a few simple ways to upgrade soup broth for a tasty, filling, and flavorful finish.
  1. Add herbs and spices. Herbs and spices add aroma, flavor, and intensity to soup broth. ...
  2. Add acidic ingredients. ...
  3. Pack in umami flavor. ...
  4. Roast the ingredients first. ...
  5. Let it evaporate and cook longer. ...
  6. Skim excess fat.
Jun 28, 2023

Can you cook soup too long in slow cooker? ›

Slow cookers are specially designed to cook food for long periods of time, but yes, you can still overcook in a slow cooker if something is left on the wrong setting for longer than it's supposed to be.

What is the secret ingredient to thicken soup? ›

Add Flour Or Cornstarch

Instead, ladle a small amount of broth into a separate bowl and let it cool. Add a few tablespoons of flour or cornstarch to the bowl and whisk until it's blended smooth. Next, bring the soup to a simmer and add the mixture back to the pot. Pro tip: Don't dump in the entire mixture at once.

How do you make cauliflower soup less bitter? ›

Cauliflower becomes bitter when exposed to too much heat. Over-cooking cauliflower can make it bitter. If your soup tastes bitter, you can add a little more salt to help with the bitterness.

How does Gordon Ramsay make cauliflower soup? ›

Directions
  1. Place the cauliflower florets, potato, and onion in a saucepan with the butter and oil. ...
  2. Add the stock and bring to a boil, then pour in the milk and return gently to a boil. ...
  3. Pour in half the cream, then puree in a food processor or blender, or blend in the pan with an immersion blender.

Can you use instant potatoes to thicken bean soup? ›

This soup-thickening hack couldn't be easier. Unlike using flour, which requires either making a little roux before you start cooking or a beurre manié afterwards, or using a cornstarch slurry that can create a gloppy texture, the instant mashed potato flakes can simply be sprinkled into the finished dish.

How do you get bean soup thick? ›

In a separate bowl, dissolve a teaspoon or two of cornstarch or all-purpose flour in a small amount of cold water. Add the slurry to the bubbling soup. The soup should thicken up. Add more cornstarch or flour as needed until the soup reaches your desired consistency.

How do you make soup creamier and thicker? ›

Add flour or cornflour

Put a tablespoon of either into a small bowl and stir in 2-3 tbsp of the soup until you have a smooth mixture. Stir this back into the soup and bring it to a simmer. Cook for a few minutes to allow the starch granules to burst to thicken, and to cook out any flour flavour.

How to thicken soup in a slow cooker? ›

Cornstarch, potato starch, and chickpea flour are a couple of pantry-friendly ways to thicken soups, stews, and sauces in the slow cooker.

Is it better to thicken soup with flour or cornstarch? ›

It's important to note that cornstarch has twice the thickening power of flour. If you need to substitute cornstarch to thicken liquid in a recipe that calls for ¼ cup (four tablespoons) flour, you only need two tablespoons cornstarch.

Why is my potato soup not thickening? ›

Adding cream to your soup will help thicken it, and it will give the potato soup a creamy, silky texture. In addition, the cream adds a rich flavor that goes perfectly with potato soup. Measure the cream into a bowl, then add a little of the hot soup to the bowl to temper it, or to bring it gently up to temperature.

Is it better to pressure cook or slow cook soup? ›

Yes, if you are using meat and dried beans and/or lentils as the pressure cooker cuts down on cooking time dramatically! For other soup vegetables not so much unless you're in a hurry, when it would speed things up. Otherwise the slow cooker is a better option for long slow cooking.

Does soup taste better the longer you cook it? ›

Bring everything to a boil, reduce the heat, and let simmer for at least 30 minutes. The longer the stock cooks, the more flavorful your soup will be.

Does food taste better in a slow cooker? ›

It's More Tender and Flavorful

Aside from being juicier, slow-cooking makes meat a lot more tender and flavorful. The extra juices help to accomplish this but it's mainly the long-cooking time that brings out the richness of the meat.

Should I cook soup on low or high? ›

Basic steps are:
  1. Add protein.
  2. Add root or fragrant vegetables.
  3. Add fat.
  4. Mix well.
  5. Add 4 cups stock, 1 to 2 cups softer vegetables or canned/frozen vegetables and spices.
  6. Cover and cook on high for 3 to 4 hours or low for 6 to 8 hours. If using cream or milk, be sure to cook soup on low for 6 to 8 hours.

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