Slow Cooker Red Lentil Soup

Ginny McMeans

Ginny McMeans

Published:

August 22, 2023

Last Modified:

July 15, 2024

Slow Cooker Red Lentil Soup is so easy and the flavors are diverse and rich. It’s a soup the whole family will love and they’ll also want it over and over again.

Slow Cooker Red Lentil Soup is so tasty and it came out so good! The flavors are diverse and rich and my husband loves it.

There is something I have to tell you about Ed. He puts saltine crackers in every soup or chowder that he sees.

No question or thought – he just adds the saltines. Thank goodness he loves this with his signature saltines (oh, well).

I love it too, sans the crackers, and so will you. 🙂

You can easily double this recipe. Just make sure your crock-pot will be big enough. That would be 8 servings.

This plant-based stew is loved by everyone and if it isn’t gone on the first night the leftovers will be just as good.

If you serve it with grilled panini sandwiches on the side then you will definitely have leftovers – or go back to the original recipe that serves 4.

And, of course, you can freeze leftovers for another night. That’s always a good thing. Just reheat and serve – to all.

Red lentil soup ready 5


Have you ever heard of a ‘dump’ recipe? I think it all started with cakes where you mix everything in a pan and then bake.

Well, cooking has evolved and there are ‘dump and go’ recipes for slow cookers too. That is what I would call this recipe.

There is nothing missing and all the texture and spices are there. The difference is that you don’t have to do any pre-sautéing or soaking.

The flavors and quality all come through.

All the flavors meld over the long period so that you can walk into your home smelling the great aroma of a home-cooked meal. It is truly a ‘dump and go’ soup and it tastes delicious.

Ingredients

Red lentil soup ingredients labels
  • Red lentils are sturdier than brown lentils.
  • Vegetable broth adds flavorful liquid for the soup.
  • Carrots are sweet and cut into very small pieces for quick cooking.
  • Tomatoes add lots of tasty juices.
  • Tomato paste adds rich flavors for the base of this soup.
  • Onion is the best base for so many recipes. They cook up sweet and taste great.
  • Garlic has a pungent flavor but when used sparingly it is delicious.
  • Lemon juice just a little bit to add a tangy flavor.
  • Ground cumin is also unusual but gives more of a tasty kick.
  • Dried basil has a peppery taste and wonderful aroma.
  • Dried thyme is very earthy and a little bit sweet, with a slight mint taste.
  • Chili powder the king of spices for this soup and adds spicy heat.
  • Black pepper adds a bit of contrasting spice.

Instructions

  • You don’t have to pre-soak lentils. That makes this an even easier soup.
  • Put everything in the slow cooker and cook on low 8 hours or on high 4 hours.  
  • Add salt to taste, if needed.
  • This is what you could call a dump and go recipe.

I have a few more slow cooker soup recipes on the blog and here is another lentil one you might want to take a peek at.

It is Slow Cooker Lentil Vegetable Soup. Just a heads up. And how about a peek at what it looks like too?

Slow Cooker Lentil Vegetable Soup is rich colors of brown and orange with vegetables such as lentils, carrots and mushrooms.

More Crockpot Soup Recipes

You see, I love soup. I think everybody does and I’m not even at the end of making the ones I have swirling around in my mind.

There are already 25 soup recipes on my blog. Ha! Yeah, soup’s good stuff!

Red lentil soup is also more of an unusual one and you get an extra bonus because it has so much protein.

How do you freeze red lentil soup

  • IF FREEZING:
  • Let cool to room temperature. Package in rigid sided containers.
  • TO PREPARE AFTER FREEZING:
  • Remove from the freezer and put in the refrigerator overnight because it is a pretty solid mass and will take longer to defrost.
  • THE NIGHT OF SERVING:
  • Put all in a large saucepan and heat through. You can add more broth if you think it is too thick. Ready to serve.

Red lentil soup ready 2

Slow Cooker Red Lentil Soup

Ginny McMeans
4.3700 from 191 votes
This Slow Cooker Red Lentil Soup came out great!
Prep Time 15 minutes
Cook Time 8 hours
Total Time 8 hours 15 minutes
Servings 6 servings

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Ingredients
  

  • 2 cups red lentils dried
  • 6 cups vegetable broth
  • 3 carrots cut into chunks
  • 14 ounces tomatoes canned, another ounce more is good too, depends on your can size
  • 6 ounces tomato paste
  • 1 onion, diced
  • 3 cloves garlic very finely diced or minced
  • 1 tablespoon lemon juice
  • 2 teaspoons ground cumin
  • 1 teaspoon dried basil
  • 1 teaspoon dried thyme
  • 1/4 teaspoon chili powder
  • 1/4 teaspoon black pepper

Instructions
 

  • You don’t have to pre-soak lentils. That makes this an even easier soup.
  • Put everything in the slow cooker and cook on low 8 hours or on high 4 hours.  
    Put everything in the slow cooker and cook on low
  • Add salt to taste, if needed.
  • This is what you could call a dump and go recipe.
    Red lentil soup ready 3

Video

Nutrition

Serving:14ounces, Calories:282kcal, Carbohydrates:52g, Protein:17g, Fat:1g, Sodium:1290mg, Potassium:1153mg, Fiber:21g, Sugar:10g, Vitamin A:6605IU, Vitamin C:21.5mg, Calcium:77mg, Iron:6.2mg

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112 responses to “Slow Cooker Red Lentil Soup”

4.37 from 191 votes (180 ratings without comment)

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Recipe Rating




  1. Linda Avatar
    Linda

    5 stars
    This was delicious. Love the rich tomato flavors in here too. The lentils were a great texture and red lentils are my favorite.

  2. Cynthia Avatar
    Cynthia

    5 stars
    This has got to be one of my favorite soup recipes. Added lemon juice. We cook lentils at least once a week. Thank you for sharing. My nutritionist will love this.

  3. Katie Avatar
    Katie

    This is the in the crockpot now for my husband and I to eat for dinner tonight! For the 14 ounces of canned tomatoes, I used a can of whole peeled tomatoes..is that correct? Wasn’t sure exactly what you meant by just “canned tomatoes”. Hopefully I used the right thing! Can’t wait to try!

    1. Ginny McMeans Avatar

      Yes, you did good Katie! It can be whole or diced as the tomatoes will break up from whole after so much time in a crockpot. I’m so glad you’re making this soup and I think you’ll love it.

  4. Cass Avatar
    Cass

    I had a huge cabbage in the fridge I had to use up and it was an excellent addition to this soup!! If anyone’s interested (:

    1. Ginny McMeans Avatar

      Thank you Cass! Sounds good!

  5. Herman Padam Avatar
    Herman Padam

    5 stars
    I have made this recipe multiple times now. It is so delicious, I make enough for the week as I love taking this to work for lunch. It is very filling and moreish. I have added chickpeas and kidney beans to give it more bite. Such a simple but yummy recipe. Love it.

  6. Chiara Avatar
    Chiara

    5 stars
    Made my winter 2020 much better

  7. Rita Avatar
    Rita

    Even though it’s 105 here today we made this wonderful soup for our dinner.
    We added celery and kale at the end.

  8. Krista Avatar
    Krista

    5 stars
    I love this soup. It had been part of my winter rotation for years. It’s so easy to make even if I don’t feel well (use frozen chopped onions and frozen carrots–no shame). It is delicious. Sometimes I add some sweet potato or butternut squash to it, too. Always yummy.

  9. Christopher Avatar
    Christopher

    5 stars
    This recipe turned out excellent. Really flavorful. I followed the recipe precisely except for adding some extra vegetable broth at the end as the soup was really thick. Thank you so much for sharing this recipe.

  10. Cheryl Avatar
    Cheryl

    It was delicious with a minimum of work.

Ginny McMeans

Ginny McMeans

Hi, my name is Ginny and it is fantastic that you have come to visit and see my recipes. I have a positive attitude and can’t seem to be in nature enough. My North American bird count is 678 and I’m always watching for mammals and insects too. My head is stuffed full of recipes that I want to create and life is just to dang short. The recipes feature healthy and delicious vegan food that you can enjoy now or freeze for future meals.

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