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(7,294)
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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7,294

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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

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 make potato soup thicker? ›

Add Flour Or Cornstarch

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

How do you thicken potato soup without cornstarch? ›

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.

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.

What is the most common thickener for soups? ›

Roux (pronounced roo) is a mixture of equal weights (parts) of flour and fat (usually clarified butter; chicken fat, bacon fat, and margarine are also used) cooked over medium heat and stirred constantly. Roux is the most common thickener for sauces and soups.

What does adding potato to soup do? ›

The theory is that a potato is the perfect vehicle to absorb excess salt. Just throw it into the pot and simmer it for awhile, remove it after it's absorbed some of the salt, and you're left with less-salty soup. No need to add more liquid or other ingredients to help disperse the extra salt.

Does cream cheese thicken potato soup? ›

Cream cheese can be a delicious and tangy thickener for mashed potatoes so it stands to reason that it can also be used to add body to your favorite silky potato soup recipes — right? The answer is yes. It only works well if you do it carefully, though.

Can you use 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 healthiest soup thickener? ›

Add a starchy vegetable like squash, pumpkin, sweet potato or white potato to your soup and let it simmer. The most straightforward way to thicken soup is to puree these vegetables using an immersion blender. But you do not have to do anything to them. Simply add and the starch will cook down to thicken your soup.

What potatoes are best for thickening soup? ›

Russets or all-purpose baking potatoes are high in starch and low in moisture. In soups, they will soak up the liquid and lose their shape. This makes them the ideal choice for making creamy soups or thickening a runny soup. Try using Russet potatoes to create the perfect Loaded Potato Soup.

What 2 ingredients are used to thicken the soup? ›

The most classic and surefire way to thicken a broth-based soup is with a cornstarch slurry. Whisk together equal parts cornstarch (or arrowroot) and water or broth, then whisk it into the pot of soup. A good ratio to get to a pleasant thickness without your soup tasting goopy or heavy is one tablespoon.

How do you thicken cauliflower soup? ›

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.

How do I fix bland tasting 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 do you fix tasteless vegetable soup? ›

Roast or caramelize your vegetables before adding them to your soup to bring out their natural sweetness. Add ingredients like mushrooms, tomatoes, soy sauce, miso, or seaweed to enhance the flavor of your soup. Use fresh herbs like parsley, cilantro, basil or thyme to add fresh flavor to your soup.

How do you add flavor to flavorless soup? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says.

What gives vegetable soup that depth of flavor? ›

A squeeze of citrus, a dollop of yogurt or a drizzle of cream, a dusting of cheese or a good chile powder, a sprinkling of some herbs or croutons — all can take a perfectly fine soup into the realm of the delectable. Even a spiral of good olive oil to finish and some coarse sea salt can do wonders.

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