Recipe | Chard, Lentil & Potato Slow Cooker Soup

Chard, Lentil, and Potato Slow Cooker Soup

Chard, Lentil, and Potato Slow Cooker Soup
What’s your favorite cookbook?

I own a ton of cookbooks, but if I had to choose the one I use the most often in my kitchen, it’s Fresh from the Vegetarian Slow Cooker by Robin Robertson. This is the book that has notes scrawled all over the pages and food spatters on the most frequently used recipes. If you’re a vegetarian and you own a slow cooker, you should really buy this book!

Fresh from the Vegetarian Slow Cooker
The thing I love about it is that the recipes are mostly unfussy. You might have to saute some ingredients before putting them in the crockpot, but other than that, things are pretty uncomplicated, which is what I like in a cookbook. I want realistic, everyday meals, you know? Something I can use, not just something with lots of pretty pictures of recipes that are such a pain to assemble, I will probably never make them.

Chard, Lentil, and Potato Slow Cooker Soup
When I was working full-time and going to library school full-time (yeah, that happened), I worked my way through a good half of the recipes in this cookbook. They were easy and I could let them cook in the crockpot all day and dinner would be ready when we got home. And without fail, they were all winners. The best part was that there were always leftovers, so we could have them for dinner the next day or freeze them. The only thing easier than a slow cooker meal is a leftover meal! Or stopping at Chipotle on the way home from work. (Yeah, that happened too.)

Chard, Lentil & Potato Slow Cooker Soup
This recipe is adapted from a kale and lentil soup that’s in Fresh from the Vegetarian Slow Cooker. It’s not super fancy, it’s not a show-stopper, but it’s a delicious, hearty soup for a chilly fall evening. I replaced the kale with chard and used a lot more than the original recipe calls for because we love Swiss chard and if I was buying a whole bunch anyway, why not use it? I even threw in the stems, so nothing goes to waste. I also added some Yukon potatoes to make this even more filling, but sweet potatoes or butternut squash would probably be just as tasty.

There are affiliate links in this post, so if you click through and buy Fresh from the Vegetarian Slow Cooker, I’ll get a few cents out of the deal. I promise not to spend it all in one place!

Print this recipe
Chard, Lentil & Potato Slow Cooker Soup

Prep Time

20 minutes

Cook Time

8 hours

Total Time

8 hours 20 minutes




  • 1 tbsp. olive oil
  • 1 large yellow onion, chopped
  • 1 celery stalk, sliced
  • 1 large carrot, sliced
  • 2 garlic cloves, minced
  • 1 large bunch Swiss chard, leaves torn into bite-sized pieces and stems sliced
  • 1 c. dried brown lentils, picked over and rinsed
  • 4 medium Yukon Gold potatoes, cut into 1-inch pieces
  • 6 c. vegetable broth
  • 1 tbsp. soy sauce or tamari
  • salt and pepper to taste


  1. Heat oil in a large skillet over medium heat. Add onion, celery, carrot, garlic, and stems from Swiss chard. Cover and cook until softened, about 8-10 minutes, stirring occasionally.
  2. Add cooked vegetable mixture, lentils, potatoes, broth, and soy sauce in a 4- to 6-quart slow cooker. Stir to combine, cover, and cook on low heat for 8 hours.
  3. Just before soup is finished cooking, bring a large pot of water to a boil. Place reserved chard leaves in boiling water and cook until tender, about 5 minutes. Drain well and stir into soup. Season with salt and pepper to taste.


Looks delicious! I have a question: how come we don’t we put the chard leaves into the slow cooker with the other vegetables? Why do we boil and add it at the end? Will it get too soft?

I was wondering, could I replace the lentils with, for example white beans instead? Would I have to cook the beans first? I am allergic to lentils but this soup looks amazing! The only beans I can eat are the haricot kind, either black red or white. (So lentils, kidney beans, peas, chick peas are all a no go)
Thanks 🙂

Looks so yummy! I was wondering if I could sub “small whole green lentils” for brown lentils? I got this bag of lentils at Trader Joe’s, and I couldn’t seem to find any brown lentils there. But I’m wondering if the green lentils are more likely to turn to mush.

Hi! This looks delicious, and I can’t wait to try it! One question though; can I use kale instead of chard? My family prefers kale, and it’s much easier to get here than chard. If so, can I add the whole bunch of kale (trimmed and torn) to the crockpot, or does kale add the same bitterness as chard? Thanks!!

Well timed. I made a few adjustments. I cooked it on high instead of low. It was ready in about five hours. I added the chard directly to the pot, instead of boiling it first, in the last 15 minutes. I wasn’t concerned about any bitterness it might impart into the soup. I also added fresh thyme. I tasted it after about two hours and found it too bland so I added a pinch (well, two) of herbes de Provence. Very good. Thanks.

Hello, could you tell me what percentage of the recipes are tofu or seitan-based? I am not a fan of either and was looking to buy eithe the vegetarian or vegan cookbook by this author. But I cannot figure out how many recipes need these ingredients.


I can’t get over how delicious this soup was! WOW! My husband made it last night – well, we put all the ingredients into the crock pot and left it in the fridge overnight, then set it in the morning. We used green lentils because that’s what we had, and kale because the store had no chard. Something reminded me of the delicious winter soups I had in Japan years back. So satisfying.

Use a large pot and sauté everything in the first step in there, then add the remaining ingredients, bring to a boil, then reduce to a simmer and cook until the potatoes and lentils are tender (probably 20-30 minutes).

Just made this for dinner and it was fantastic. I’m not much of a soup eater, but with all of these clean and wholesome ingredients, I will definitely make this again. It is popping with flavor and I feel great about eating it

Would love to try this soup so I hit the Print button . . . and nothing happened. I tried it on 2 recipes and got the same result. I’m using Google Chrome. Should I use a different browser?

Leave a Reply

Your email address will not be published. Required fields are marked *