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Rustic Lentil Soup

There’s something incredibly satisfying about a bowl of Rustic Lentil Soup on a chilly day. This isn’t your basic lentil soup. It’s packed with savory bacon, smoked sausage, and aromatic vegetables that simmer together in a rich tomato broth. The green lentils become perfectly tender while keeping their shape, and chunks of Yukon Gold potatoes add that comforting, stick-to-your-ribs quality that makes this soup feel like a warm hug. Whether you’re meal prepping for the week or feeding a hungry crowd, this recipe delivers serious flavor with minimal fuss.

Rustic Lentil Soup in a bowl on a wooden serving board with bread on the side.

I love this soup, and hope you will, too!

I’ve been gatekeeping this version of the soup for many, many years. Not to intentionally keep it to myself; it’s just that it’s a regular rotation soup here at Casa SoupAddict that gets tweaked every time I make it.

But now, it’s finally settled into the form it was meant to be, and it was time to share! If you’re cutting back on beef this year and wanting to work more legume proteins into your meals, this is the soup to start with. It’s hearty and delicious, and absolutely hunger-crushing!

Rustic Lentil Soup is —

  • Incredibly filling. Between the protein-rich lentils, chunky potatoes, and savory meats, this soup keeps you satisfied for hours.
  • Extra flavorful. Bacon and smoked sausage add a smoky depth that makes this soup taste like it’s been simmering all day.
  • Perfect for meal prep. Make a big batch on Sunday and enjoy healthy, delicious lunches all week long. It also freezes beautifully.
  • Budget-friendly. Lentils are inexpensive, and this recipe stretches them with vegetables and potatoes to feed a crowd without breaking the bank.

If you love hearty lentil soups like I do, you might also enjoy my Creole Lentil Soup and my Marry Me Red Lentil Soup. So filling and delish!

View from above of Rustic Lentil Soup in a large Dutch oven with a serving spoon.

Key Ingredients

Lentils — Lentils are the texture backbone of this hearty soup. Use brown or green lentils (note that in the packaging, dried green lentils look brown). Red lentils are too tender and will cook to mush. You could also use French du Puy green lentils or black beluga lentils — increase the soup cooking time as necessary according to the package directions to ensure the lentils are cooked through.

Bacon and Sausage — Bacon does double duty both for infusing the cooking oil with lots of bacony goodness, and to add a little meaty texture. Smoked sausage, browned well with the bacon, adds that chunky bulk that makes soups so lovable. I used a rope of pork smoked sausage, but you can substitute turkey, chicken, or even go a little zesty with andouille.

Tomatoes — My recipe uses both tomato paste and tomato sauce to build the broth. The acid from the tomatoes punches up the lentils, as they’re natural flavor pairs.

Yukon Gold Potato — Potatoes serve a couple of purposes here. They add more chunky texture, and they also temper the acidity of the tomatoes with their starchy, creamy smoothness. You can substitute sweet potatoes, but I highly recommend not leaving out the potatoes altogether without other plans to offset the acidity of the tomatoes (such as adding a splash of cream).

Aromatic Vegetables — To build on the layers of flavor, onions, celery, and carrots saute in the bacon and smoked sausage to create the base of the soup.

How to Make Rustic Lentil Soup

Ready to make the recipe? Skip to the recipe card now to see the full ingredient list, quantities, prep/cooking times, and printable, detailed instructions. Or, keep scrolling for a visual walk-through and summary of making the soup.

Prep notes

Prepared ingredients for Rustic Lentil Soup measured into bowls and arranged on a board.

Here’s a quick guide for preparing the ingredients, if you need it (excluding items that can be measured directly from a container, such as dried herbs and liquids).

  • Chop the bacon into small dice.
  • Slice and chop the smoked sausage into small pieces, such as quarter moons.
  • Peel the onion and slice off and discard the stem and root ends. Chop into small dice.
  • Clean, and cut off the rough ends of the celery ribs. Chop into small dice.
  • Scrub and the carrot and cut off the stem end. Chop into small dice.
  • Peel the garlic cloves and mince.
  • Scrub the potatoes thoroughly and pat dry. Peel, and then cut into 3/4″ cubes.

Cook the bacon and sausage

Bacon and smoked sausage cooking in the pot.
Aromatic vegetables and potatoes in the pot.

Saute the bacon and sausage in some oil, stirring frequently to brown all sides and prevent sticking, until the sausage starts to take on golden brown coloring.

Add the aromatics and spices

Spices, garlic and tomato paste blooming in the pot.
The base of the soup cooked and ready to proceed.

Stir in the onions, celery, carrots, and potatoes and cook until the onions have softened. Add the tomato paste, garlic and herbs to a cleared area and let cook to bloom the fragrances and flavors. Mix everything together.

Add the liquids

Pouring in the chicken broth.
Adding the tomato sauce.
Bringing the soup up to a boil.

Pour in the chicken broth and tomato sauce, and bring the soup to a boil.

Cook the lentils

Adding the dried lentils to cook in the soup.
And the soup is cooked and ready to serve.

Add the lentils and cook until tender. Check the pot a couple of times during the cook and adjust the liquids, if the soup is getting too stew-like. Serve with your favorite toppings.

Storing

Rustic Lentil Soup stores very well. Let the soup cool and transfer to your preferred containers. Keep the soup in the fridge for 4 to 5 days, or in the freezer for 3 months.

Frequently Asked Questions

One of the nice things about lentils is, unlike dried beans, that they don’t require pre-soaking and cook relatively quickly on the stovetop. Just be sure to give them a good rinse in a fine-mesh strainer before using, and pick out any small debris or stones before adding them to your pot.

You can definitely adapt this soup for the crockpot. I recommend browning the bacon and sausage separately in a pan first to get that crispy texture and deep flavor. Then, add the meat — scrape the fat, too — along with all the other ingredients into your slow cooker and cook on low for about 6 to 8 hours until the lentils and potatoes are tender.

This soup keeps beautifully in the refrigerator for up to five days. As it sits, the lentils and potatoes will continue to soak up the broth, so it will thicken quite a bit. When you’re ready to eat, just add a splash of water or broth while reheating it on the stove to bring it back to your preferred consistency.

Yes, this is a very freezer-friendly recipe. Once the soup has cooled completely, transfer it to freezer-safe bags or containers. It will stay fresh for up to three months. Just let it thaw in the fridge overnight before reheating as described above.

Side-angled view of a bowl of Rustic Lentil Soup on a serving board.

This Rustic Lentil Soup has become a staple in my kitchen, and I hope it’ll quickly become one of your favorites, too. If you make this soup, I’d love to hear how it turns out! Leave a comment below and let me know what you think, or tag me on social media (@soupaddict) so I can see your delicious creation.

Karen xo
Overhead view of Rustic Lentil Soup in a ceramic bowl.

Rustic Lentil Soup

5 from 3 votes
A hearty and flavorful lentil soup made with green lentils, bacon, smoked sausage, aromatic vegetables, Yukon gold potatoes, and herbs in a savory tomato broth. This rustic soup is perfect for meal prep and delivers comforting, home-cooked flavor.
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Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour

Ingredients
  

  • 1 tablespoon olive or avocado oil
  • 2 strips uncooked bacon , chopped
  • 7 ounces smoked sausage link (about half of a rope) , chopped
  • 1 small onion , diced
  • 2 ribs celery , diced
  • 1 medium carrot , peeled and diced
  • 1 medium medium Yukon Gold potato , scrubbed and diced
  • 3 cloves garlic , minced
  • 1 tablespoon tomato paste
  • 2 teaspoons dried Italian herb blend
  • 1/4 teaspoon red pepper flakes
  • 8 ounce can tomato sauce
  • 4 cups chicken stock or bone broth
  • 1 cup lentils (green or brown, rinsed well and picked through for debris)
  • Salt and black pepper

Suggested toppings:

  • Chopped flat-leaf parsley
  • Green onion , sliced thinly
  • Shredded Parmesan cheese

Instructions
  

  • Heat the oil in a large 4-5 quart soup pot or Dutch oven over medium until the surface of the oil shimmers.
  • Add the bacon and smoked sausage and cook until the bacon has browned and the sausage takes on golden edges (about 8 minutes or so). Add the onions, celery, carrots, and potatoes cook the mixture until the vegetables are tender and lightly browned (about 8 minutes. Note the potatoes will not be fully cooked at this point; that’s okay).
  • Scoot the mixture to one side of the pot and add the garlic, tomato paste, herbs, pepper flakes, and a big pinch of salt to the cleared area. Stir these ingredients into the tomato paste and let cook for a minute or two to bloom the flavors, and then mix into the meat and vegetables.
  • Pour in the chicken stock and tomato sauce and increase to medium-high to bring the soup to a light boil.
  • Add the lentils, and adjust the heat to maintain an active simmer (bubbles actively breaking the surface but not a roiling boil). Skim off foam that forms on the surface.
  • Partially cover the pot with a lid and cook the soup for 20-30 minutes, stirring occasionally, or until the lentils are tender but not mushy.
  • Keep an eye on the soup to make sure it doesn’t get too thick. If it does, add a 1/2 to 1 cup of water or chicken broth to return it to a soupy consistency.
  • Taste the soup, and season with salt and black pepper as desired. Add your favorite toppings and serve.

Video

Nutrition

Serving: 1gCalories: 310kcal
Keyword lentil soup
Tried this recipe?Let us know how it was!
5 from 3 votes
Recipe Rating




Polly Poulos

Tuesday 22nd of January 2013

Came across this recipe and just had to make it. I was looking for something that was budget friendly and this fit the bill since all the spices were ones already in my cabinet. And it had bacon. :) It smelled divine while cooking and was so incredibly easy for this non-cook to make. It turned out really good, however, I did find it to be too salty (and I like salt). I think between the bacon, sausage and the teaspoon of salt, it was way too much. Next time when I make it, I will probably leave out the salt and maybe use a low sodium chicken stock. If I were to make it vegetarian, then maybe I would add the salt back in.

Polly Poulos

Sunday 18th of November 2018

Five years since I first came across this recipe and it’s still a staple in my recipe files. I’ve since become a better cook since I first started making this and learned that because I was using kosher salt instead of regular salt, that was the reason it was tasting overly salty to me. With that correction, the recipe is perfect!perfect

Around The Interwebs « Mrs. Darsie's Menagerie

Wednesday 3rd of October 2012

[...] SoupAddict posted a great recipe called ‘Rustic Lentil Soup’.  Now that the weather is starting to cool, I want more soup, too! [...]

Mrs.Peña

Saturday 25th of February 2012

I've made this a few times now and boy oh boy this is one of our favorite soups! Today i'm trying your potato leek. Looking forward to it!! :) thanks for sharing these wonderful recipes

Amanda at MotherMeetsTheRoad

Sunday 22nd of January 2012

I clicked on this recipe because on Thursday I had lentils that were DIVINE at lunch and have been thinking about them ever since.

Thanks for sharing!

self-called iron chef

Friday 13th of January 2012

Making this soup today and it sells divine. Can't wait to have a bowl!