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(7,261)
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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7,261

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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 white bean soup? ›

The most obvious being a slurry — or a combination of the broth and flour (or starch). Other options for thickening a soup include blending some of the cooked soup vegetables and adding them back in; throwing in some bread; or adding in a beurre manié — aka the “reverse roux” — made from flour mixed with butter.

What if my bean soup needs more flavor? ›

That's what my gram used to do:
  • Gently fry a mixture of paprika, cumin and crushed garlic in olive oil in a small pan. Watch out it doesn't burn. Pour on top of soup when soup is already in serving bowl.
  • Prepare a mixture of freshly squeezed lemon juice and crushed garlic. Texture of the mixture should be pretty thick.

How to thicken bean soup with cornstarch? ›

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.

What to do when your soup has no flavor? ›

6. Perk up a Bland Soup With Simple Pantry Staples. Got a soup that tastes a little bland and unexciting? Add a splash of vinegar (any kind!), or a squeeze of citrus.

How to make soup really flavorful? ›

"Ground paprika, turmeric, nutmeg, ground ginger, and other powdered spices add a touch of color and spiciness to broths," she says. As a general rule, use fresh herbs at or near the end of cooking and dried herbs and spices early on. This helps you get the flavors you're looking for in the right balance.

What is the secret ingredient to thicken soup? ›

Soup Thickening Method: Cornstarch Slurry

About this method: One of the most common ways to thicken sauces and soups is with a starch-based slurry, and cornstarch is a popular choice. Cornstarch is flavorless, easy to mix up, and versatile, which makes it a go-to pantry ingredient.

Can I use potatoes to thicken soup? ›

Even if you don't purée the soup with a blender, potatoes release starch as they cook — thickening the broth with a satisfying velvety consistency.

How to thicken beans in a crockpot? ›

Cornstarch, potato starch, and chickpea flour are a couple of pantry-friendly ways to thicken soups, stews, and sauces in the slow cooker. Just a tablespoon or two of any — added towards the end of cooking — will thicken sauces especially well.

What not to put in soup? ›

The Worst Things to Put in Your Soup
  1. By Sara Butler. If there's one good thing about fall and winter, it's soup. ...
  2. Heavy Cream. Heavy cream creates an inviting texture for soups but that's where its positive contributions end. ...
  3. Juice. ...
  4. Turkey Bacon. ...
  5. Cheese. ...
  6. Croutons.

Why is lemon juice added to bean soup? ›

Always Add An Acid To Your Soups

Lemon is arguably even more essential in richer soups like wild mushroom and rice, curried split pea, or even white bean and bacon. This is because the delicate balance of flavor profiles requires that acidic, lemony zing to cut through the fats in the soup.

What does lemon juice do to soup? ›

Lemons are a chicken soup game changer. Why? They brighten up and balance the salty, rich flavors of the dish, and make all of the ingredients come into line. Like a vinaigrette on a salad, the pickle on a burger, and the sour cream in a coffee cake, a squeeze of lemon gives chicken soup a game-changing brightness.

How to thicken soup in a slow cooker? ›

As a rule of thumb, dissolve 2 parts cold water and 1 part cornstarch. Add the slurry to your sauce as it simmers in the slow cooker. Cornstarch is always a good way to thicken a sauce or soup but personally I would recommend going a different route as the cornstarch slurry may change the flavor of the meal.

When to add cornstarch to a slow cooker? ›

Serve with or over meat and/or vegetables. You can also add cornstarch dissolved in water (1 or 2 tablespoons cornstarch to 2 or 3 tablespoons cold water, depending on how much liquid you have) directly to the slow cooker near the end of cooking to thicken the liquids.

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.

What gives vegetable soup that depth of flavor? ›

Tips for Flavorful Vegetable Soup

Flavor the base: We add Italian seasoning and tomato paste to the aromatics and warm them up to bring the seasonings back to life. You could use fresh herbs like thyme or rosemary, or even add a Parmesan rind for more flavor.

What to add to flavorless vegetable soup? ›

Adding a parmesan cheese rind to the simmering soup infuses it with salty, umami flavor. This is SUCH an easy way to add tons of flavor to soup. Look for parmesan cheese rinds at the cheese counter in your grocery store.

Is cauliflower flavorless? ›

Raw cauliflower has a subtly sweet, slightly nutty flavor. It is delicate and mild with a hint of pepperiness. Cauliflower's crisp texture yields a pleasing crunch when included in salads or used as a vessel for dips.

How do you make vegetable soup not taste bland? ›

A little tomato sauce, garlic, salt, and bay leaves while cooking was Patty's recommendation. Barbara said, “I add a beef billion cube, oregano, basil and garlic.” That would definitely spice up the soup. The bullion usually adds a lot of sodium so you get a lot of salty flavor. “Six pepper, sparingly”, Laureen said.

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