Slow Cooker Black Bean Soup

$4.81 recipe / $0.79 serving
by Beth - Budget Bytes
4.69 from 130 votes
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I love black bean soup like I love chili. It’s great on its own, but it’s also fun to get creative with toppings and turn it into a bowl full of fun (okay, maybe I get too excited about food). This awesomely flavorful and easy slow cooker black bean soup practically makes itself, which is perfect for hot summer days like this when you don’t want a pot of soup boiling away on the stove making your whole kitchen extra steamy.

Top view of a bowl of black bean soup garnished with green onions and sour cream

What else is awesome about this soup? Wellll…. It’s vegan, super filling, low cal, high fiber, high protein, full of veggies, and costs next to nothing. Need I say more?

And about those awesome fun toppings? I ate mine with a dollop of sour cream, but you could do crispy tortilla strips, green onions, cilantro, pepitas, cheddar or pepper jack cheese, or even a scoop of cooked rice. Actually, just about anything that goes good in a taco would probably go awesome on top of this soup. Go wild!

Side view of a bowl of black bean soup garnished with green onion and sour cream
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Slow Cooker Black Bean Soup

4.69 from 130 votes
Packed with vegetables, flavor, protein, and fiber, this ultra-flavorful and low-calorie Slow Cooker Black Bean Soup is an all around winner!
Packed with vegetables, flavor, protein, and fiber, this ultra-flavorful and low-calorie Slow Cooker Black Bean Soup is an all around winner! BudgetBytes.com
Servings 6 1.5 cups each
Prep 15 minutes
Cook 6 hours
Total 6 hours 15 minutes

Ingredients

  • 2 cloves garlic ($0.16)
  • 1 yellow onion ($0.41)
  • 2 ribs celery ($0.33)
  • 2 carrots ($0.28)
  • 1 lb. black beans (uncooked) ($1.75)
  • 1 cup salsa ($0.85)
  • 1 Tbsp chili powder* ($0.30)
  • 1/2 Tbsp ground cumin ($0.15)
  • 1 tsp dried oregano ($0.05)
  • 4 cups vegetable broth ($0.53)
  • 2 cups water ($0.00)

Instructions 

  • Mince the garlic, dice the onion and celery, and grate the carrots on a large holed cheese grater. Rinse the black beans in a colander under cool running water and pick out any stones or debris.
  • Combine the garlic, onion, celery, carrots, black beans, salsa, chili powder, cumin, oregano, vegetable broth, and water in a 5-7 quart slow cooker. Stir well.
  • Place the lid on the slow cooker and cook on high for 6-8 hours (you want the beans to get VERY soft). Once the beans are very soft, use an immersion blender** to blend the soup until it is thick and creamy (leave some beans whole if desired). Taste the soup and add salt if needed (this will depend on the brand of vegetable broth used).

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Notes

*Chili powder is a blend of mild red chiles and other spices. It is not cayenne pepper, which is extremely spicy.
**If you do not have an immersion blender, wait until the soup cools some and then use a blender to purée the soup in batches. Make sure to never blend hot liquids as they can build pressure in the blender and explode, causing severe burns.

Nutrition

Serving: 1.5CupsCalories: 293.73kcalCarbohydrates: 54.75gProtein: 17.4gFat: 1.43gSodium: 1305.7mgFiber: 19.5g
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top view of a bowl of black bean soup garnished with green onion and sour cream

How to Make Slow Cooker Black Bean Soup – Step by Step Photos

Black beans in colander to rinse

Rinse the dry beans under cool water to remove any dust and dirt. If there are any pebbles or other debris, pick them out.

Black Bean Soup Ingredients in slow cooker

Add the beans to a 5-7 quart slow cooker along with 2 cloves of minced garlic, one onion (diced), 2 stalks celery (diced), 2 carrots (grated on a large holed cheese grater), 1 cup salsa, 1 Tbsp chili powder, 1/2 Tbsp cumin, and 1 tsp oregano. Add to that 4 cups of vegetable broth and 2 cups of water. Stir well, place the lid on top, and let it cook on high for 6-8 hours (the goal is VERY soft beans). 

Cooked Black Bean Soup in slow cooker

After 6 hours on high (it can go 8 hours if needed), the beans will be soft and floating around in a bunch of liquid. You want this to be a thick soup, so you’ll need to purée some of the beans (or all if you want it to be a super smooth soup). The easiest way is to use an immersion blender, but if you don’t have one, it can be done with a regular blender. If using a regular blender, let the soup cool until it’s no longer hot (warm is okay). blend about half of the soup in batches for a slightly chunky soup, or all of the soup for a smooth soup. When blending warm liquids it’s always a good idea to throw a towel over the top of the closed blender to catch any spray if it does build pressure and burst out the top. Never, NEVER, blend hot liquids. (speaking from experience).

Blended Black Bean Soup in slow cooker

I blended about half of my soup and left some beans whole for texture. Blending the beans also thickens up the soup considerably. Once it’s blended, give it a taste and see if you need to add salt. I used Better Than Bouillon soup base for my vegetable broth, which tends to be on the salty side, so I didn’t need to add any. If you’re using a low sodium broth, you’ll probably need to add a pinch to make the flavors pop.

Top view of a bowl of black bean soup garnished with green onion and sour cream

And then go crazy with toppings! Woot! 

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  1. Making this tomorrow. You think if I soak the beans overnight, it will be alright and cook faster? I have lots of experience cooking but almost none cooking beans from dry.

    1. It might cook slightly faster, but you’ll still want to cook them for a long time so they are very soft. If you do presoak, you’ll probably want to reduce the amount of liquid, too, but since I haven’t tried it I’m not sure of the exact amount.

    2. not that this will help you know but Pioneer Woman has a quick cook dried bean shortcut that is like soaking them overnight,

  2. Great recipe! Started it this morning before school and ate it for dinner. Perfect for a broke college girl!

  3. Can’t wait to try this recipe…if it’s anything like your other recipes, I’m sure it will be very good! I do have a question though. What size is your crockpot? With a family of 6 I usually have to double recipes. Just want to make sure that I don’t overflow my crockpot, lol.

      1. Doubled it with no problem in my 7 quart crockpot. Just made this for the second time and it’s a hit with everyone!

  4. Love this recipe!!!! I found that beans were soft enough (at least in my opinion) after about 5 hours or so — but that could just be my slow cooker. It was nice to be able to come home after work this summer, and have something I could eat for dinner without much extra effort!

  5. I know the recipe calls for vegetable broth, but I completely forgot to pick it up at the store. I have chicken broth. Would that suffice or would the flavor be wonky?

    1. Yep, chicken broth would also be awesome in this. I just used veg to keep it vegetarian. :)

  6. This turned out great! I added 1 large golden beet (trying to use up my CSA box) in place of one carrot. I also used green salsa since that’s what I had on hand. I was worried when I filled up my crock pot that the beans would expand and spill over (I have a smaller crock pot), but I had just about an inch of clearance and it worked fine. Froze some to have later.

  7. This is a fantastic recipe. Easy to make and very flavorful.

    As someone else pointed out, I used Medium salsa and added half a jalapeno. It really gave it some extra zing. Honestly, for me it could be spicier, I’ll probably add a whole jalapeno next time, and there will definitely be a next time on this one!

  8. Tried this recipe. Kids LOVE it. It is SO versatile! Used mild salsa. Next time I will use medium or add a jalapeno to the mix. (We like a little more spice.) Served it with a little more salsa and some sour cream.

    My kids took some of the pureed bean mixture and slapped it inside a tortilla shell with some diced tomatoes, lettuce, and cheese. We then had TWO uses for it: Soup AND tacos. I could add less water and use the black bean mixture in place of refried beans (which no one in the family will eat). My 15 year old also suggested cooking the beans in the slow cooker and then using them to make a black bean hummus!

  9. Made this soup earlier this week. My husband really enjoyed it, but I love Beth’s other black bean soup way more (black bean and roasted salsa). Regardless, an easy, very inexpensive vegetarian dish.

  10. This looks delicious! Just making sure… I cook on HIGH for 8 hours?! Before finding this recipe I was going to make plain black beans in the slow cooker and I was only supposed to cook them for 3 hours on high. Just making sure!

    1. I did cook mine on high for about 8 hours. You might be able to do less, like 6, though. I definitely wanted to cook them longer than when I just cook regular black beans because I wanted them to break down more and be easily mashable.

    2. Keep in mind that the author did not soak the beans prior, which leads to a longer cooking time as well. I’d definitely soak. I’ve heard it breaks down some enzyme that makes you gassy when you eat the beans…. worth it to me lol.

  11. Didn’t quite go as planned. It smelled amazing when I got home, but imagine my disappointment when I took the lid off and found the mix completely dried up and charred on the edges :( I only set it to 6 hours too.

    Probably just needs some reworking on my end due to my slow cooker, but it wad not salvageable this time.

    Would recommend that you do this recipe when you can monitor the slow cooker so it doesn’t dry out.

  12. Eating this right now with sour cream, cilantro, and green onions atop… and it’s love! (I also just got an email from my boyfriend who is also at work and just dug into his soup, too… he’s a fan, too).

    Two things:
    – The soup is doubly delicious after sitting in the ‘fridge overnight!
    – At the end/after blending the soup, I added an extra cup of broth and a can of black beans (left them whole) to pump this soup up further. As if it needed more pumping.

    Fantastic! Thank you for this new staple!

  13. Family loved this! With the toppings (green onions, sour cream, cheddar, and tortilla crispy strips) it’s like a burrito in a bowl.

    Just be careful, you’ll want to go back for seconds because it’s so good, but about a half hour after eating you’ll be super stuffed!