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(7,263)
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. Step

    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

4

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7,263

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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!

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.

Matthew

an addendum to my first comment.... I definitely recommend just a few whirls with an immersion blender, leaving the soup chunky.

Cyn Lanners

We cut up and sautéed a couple of chicken sausages, and added them to the soup. We ate it with whole grain bread from the store bakery. With these accompaniments this was a delicious and filling meal. It provided several servings for 2 people, and I added the sausage each time, after eating the soup with only the bread the first time. I would also include a salad or fresh vegetable on the side, though the soup is vegetable-rich.

Brushjl

Pretty good, very rich and creamy soup.

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

FAQs

Why is my cauliflower soup tasteless? ›

Bland cauliflower soup is a result of a lack of seasoning. Here's how to ensure every bowl is packed with flavor. Season twice with salt and pepper: You'll start by seasoning the cauliflower florets with salt and pepper before roasting.

How do you thicken potato soup with flour? ›

To thicken potato soup without creating lumps, you can use a roux made of equal parts butter and flour. Melt the butter in a separate pan, add the flour, and whisk until smooth. Slowly whisk the roux into the soup, and let it simmer until thickened. Be sure to whisk continuously to prevent lumps from forming.

How to thicken navy bean soup? ›

Add Flour Or Cornstarch

You can thicken soup by adding flour, cornstarch, or another starchy substitute.

How to thicken black bean soup? ›

Mashing 1 can of black beans before adding it to the soup helps make it thick and creamy. If you prefer a thicker soup, use an immersion blender or stick blender to blend more of the soup ingredients with the broth until as thick as desired. Alternatively, try a thickening agent like cornstarch.

What brings out the flavour of cauliflower? ›

There are two really simple techniques that bring out the best in cauliflower: grilling and pickling. Dumping cauliflower florets in a mixture of salt and lemon juice for 45 minutes to an hour turns them into spiky little flavor bombs, delivering high-pitched squeaks in salads, sandwiches or the stew recipe here.

How to make soup really flavorful? ›

7 Easy Ways to Make Any Soup Better
  1. Brown or Sear the Meat.
  2. Roast the the Veggies.
  3. Mix up the Texture.
  4. Use Homemade Stock Whenever Possible.
  5. Put Your Cheese Rinds to Work.
  6. Perk up a Bland Soup With Simple Pantry Staples.
  7. Add Fresh Herbs or Dairy When Serving.
  8. Recipes Pictured.

How to thicken potato soup in a crockpot? ›

Add a slurry at the end.

A slurry is a mixture of flour and water, whisked together until smooth and added towards the end of cooking; it's a super-simple way to thicken any soup. For slow cooker soups, add your slurry with at least 30 minutes of cook time left so that the raw flour can cook and thicken the soup.

Does soup get thicker the longer you cook it? ›

Many home cooks find themselves wondering how to thicken a soup, and there are a few different ways: cooking the soup longer to remove excess liquid, blending some of the solid ingredients of the soup, or using food scraps like bread or potatoes to thicken the soup, but if you don't have time to wait, you can use a ...

Does heavy cream thicken soup? ›

Heavy cream

Use heavy cream as a keto-friendly thickening option for your soups and broths. Heavy cream has more fat than regular whole milk, so you can add it to your soup recipes without worrying about it curdling.

Can I use white beans to thicken soup? ›

You can also thicken soup by puréeing it with cooked beans or lentils. White beans like cannellini beans or navy beans are especially good for puréeing. This recipe for Creamy Italian White Bean Soup is a great place to start. Puréeing hearty winter vegetables like butternut and kabocha squash will also do the trick.

What is the thickener in a white bean soup? ›

What is the thickener in a white bean soup? In this recipe, what really thickens up the soup is the 15 oz of white beans that you are mashing and the starches from the potatoes. We aren't using cornstarch or a thickening agent in this recipe, it really doesn't need it!

Can you use instant mashed 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 to thicken cauliflower soup? ›

Can you make this cauliflower soup thicker? We thicken cauliflower soup by cooking flour and butter together to make a roux, but the soup will have a brothy consistency. To create a thicker texture, puree 2 cups of soup. Then add the puree back to the pot and stir until well combined.

Why is my bean soup not thick? ›

Use Cornstarch or Arrowroot Powder

If you're looking for a gluten-free option to thicken your bean soup, cornstarch or arrowroot powder can be excellent substitutes. In a small bowl, mix a tablespoon of cornstarch or arrowroot powder with some cold water until it forms a smooth paste.

What is the best soup thickener? ›

Whisking beurre manié (butter-flour paste) into simmering soup is the best way to thicken an otherwise too-watery soup. Add bits of the paste gradually and simmer to cook out any raw flour taste. The broth will be velvety smooth, rich, and thick.

How do I fix bland tasting soup? ›

Foods that have a great deal of acidity, like lemon juice, vinegar, white wine, and tomato puree, can help liven up the flavor of bland-tasting bone and other broths. "The acidity of these ingredients works to complement and enhance the broth's flavors, not mask it.

How do you fix flavorless soup? ›

If a soup is tasting bland in the bowl, consider adding acid rather than salt. A squeeze of lemon or lime, or a dash of yogurt or sour cream can add brightness to the bowl. Our Lemony Chicken Soup will make your mouth water.

How can I add flavor to tasteless soup? ›

Spicing Up My Bland Vegetable Soup
  1. Onions.
  2. Carrots.
  3. Celery.
  4. Cabbage.
  5. Potatoes.
  6. Chicken.
  7. Can of diced tomatoes.
  8. Chicken broth.
Nov 11, 2021

Why does my soup have no flavor? ›

Ensure you've added enough salt and black pepper. Too little salt means your soup's flavours' will remain hidden. When you know your soup is salty enough, move on to other seasonings like herbs and spices.

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