Italian lentil soup is a hearty soup that is perfect for cooler weather. Simple to make and budget friendly, our version includes carrots, onions, celery, and plum tomatoes, plus baby spinach, a touch of oregano, and a rind of Parmigiano Reggiano. Perfect served alongside a salad, sandwich, or some crusty bread, this soup can be ready in about 1 hour.
One of the things I like best about Italian lentil soup is that it can be made with items that I almost always have on hand in the pantry, and in the refrigerator.
I usually keep several bags of lentils in my pantry as well as plum tomatoes and beans. Carrots, celery, and onions are also always there waiting to be used in some way. From beef barley soup and Tuscan white bean soup, to pasta e ceci and split pea soup we make plenty of soup recipes during the fall and winter months.
This is the soup I grew up eating. Nothing fancy about it at all. In fact, it is really basic. More basic than my sausage lentil soup, though that one isn’t too difficult either.
How to make the best lentil soup
Note: Whenever using lentils, make sure to inspect them in a bowl for any hard rocks or debris and be sure to discard.
Each number corresponds to the numbered written steps below.
- Dice 2 celery ribs, 2 medium carrots, and 1 medium onion (Photo #1). Tip: Include the celery leaves for more flavor!
- Heat a large heavy pot to medium-low and add a 1/4 cup of olive oil along with the carrots, celery, and onion. Cook until soft and translucent (about 10 minutes). (Photo #2)
- After the veggies are nice and soft add in 3 ounces of tomato paste (half a standard can) and cook, stirring frequently for 5 minutes (Photo #3).
- Next, add in 8 ounces of hand-crushed plum tomatoes, 1 teaspoon of dried oregano, 1 bag of lentils (standard 1 pound bag), a Parmigiano Reggiano rind, and 8 cups of water. Bring to a boil, then lower heat and cook over a simmer until the lentils are soft (about 45-50 minutes) (Photo #4). Note: I always recommend saving the rinds from Parmigiano Reggiano blocks. They add great flavor to almost all soups! Just omit this step if you don’t have one.
- Taste test the lentils to make sure they are all tender and that no hard pieces are left. Once satisfied, turn off the heat and add the baby spinach (Photo #5).
- Adjust salt and pepper to taste to get the flavor just right (Photo #6).
Bring your pot of lentil soup to the table and serve alongside a delicious green salad and this light and fluffy no knead focaccia.
Drizzle your best extra virgin olive oil onto each bowl and offer grated cheese for anyone who would like some.
Top tips
- Check your lentils. Whenever working with lentils, make sure to inspect them in a large bowl for any hard pebbles or debris. Sometimes they can erroneously be packaged at the sorting facility. Just discard anything that is not a lentil.
- Save your Parmigiano Reggiano rinds. When you’ve used the last bit of cheese and are about to toss the rind, think twice. Adding the rind to sauce and soups, like sausage lentil soup, spicy sausage potato and kale soup or pasta e ceci adds another layer of flavor that is just so darn good.
- Make ahead of time. Making any soup ahead of time and allowing it to sit in the fridge for a day or two will allow the flavor time to mature, yielding an even better tasting soup.
- Don’t be afraid to add. I added baby spinach to this recipe, but don’t be shy to add other ingredients depending on your mood. I usually add red wine vinegar right before I eat lentil soup. My wife usually adds Greek yogurt to hers for some extra protein. Sausage or even ground turkey would be great add-ins as well.
More great soup recipes
In addition to the soups I mentioned above, these are some of my favorites, and more reasons to hang on to those Parmigiano Reggiano rinds!
If you’ve enjoyed this Italian Lentil Soup Recipe or any recipe on this site, give it a 5-star rating and tell us about it in the comments below.
We strive to satisfy a number of learning styles. If you are someone who prefers to learn by watching, you can find most of our recipes on YouTube and our Facebook Page.
For more never-before-seen FULL MEAL RECIPE VIDEOS, become a Patreon member today!
Italian Lentil Soup
Ingredients
- 1/4 cup (60g) extra virgin olive oil
- 1 medium onion diced
- 2 ribs celery diced
- 2 medium carrots diced
- 1 teaspoon dried oregano
- 3 ounces (85g) tomato paste
- 1 cup (240g) crushed plum tomatoes
- 1/2 pound (226g) baby spinach
- 8 cups (1.9kg) water
- 1 pound (454g) brown or green lentils see notes below
- 1 small Parmigiano Reggiano rind optional, see notes below
- 1 1/2 teaspoons Diamond Crystal Kosher salt
- salt and pepper to taste
Instructions
- Heat a large heavy pot to medium-low and add the olive oil, carrots, celery, and onion. Cook until soft and translucent (about 10 minutes).
- Add in the tomato paste and cook, stirring frequently for 5 minutes.
- Next add in the plum tomatoes, oregano, lentils, Parmigiano Reggiano rind, and water. Bring to a boil, then lower heat and cook over a simmer until the lentils are soft (about 45-50 minutes).
- After the lentils are cooked through and tender, turn off the heat and add the baby spinach.
- Taste test and adjust salt and pepper to taste. Serve in bowls with a drizzle of extra virgin olive oil and with grated cheese on the side. Also, serve with crusty bread. Enjoy!
Notes
- Makes 8 moderate or 6 large servings.
- Brown and green lentils can both be used. Brown cook a bit quicker and have a milder taste than peppery green lentils.
- Always save your Parmigiano Rinds! They are excellent for soups like this, but if you don’t have one just serve with grated cheese.
- A drizzle of extra virgin olive oil and/or a splash of red wine vinegar is an excellent addition to each bowl.
- Leftovers can be saved for up to 3 days and can be reheated in the microwave. Lentil soup can be frozen for up to 3 months.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Easy to make and very delicious.
We’re so happy you enjoyed, Kathy!
Jim,
Thank you for all your absolutely wonderful recipes. Please tell me how many servings each recipe is for.
Best Wishes for 2025!
Hi Arlette, the serving information is always within the recipe card. Please refer to that section for each one you’re looking for. The lentil soup makes 8 servings.
Say Jim. First off keep those recipes coming. I have a question regarding soups. I just recently looked over and printed the recipe for Italian Lentil soup. I love the ingredients. Can a person lets say put in prepared ground beef. Or other types of meat for additional flavor or will it take away from what the soup was designed for.
Hi Richard, you can 100% add ground beef to the recipe, or anything else you’d like. I’ll often add cubed chuck roast to it if I want something heartier. Hope you enjoy!
Jim and Tara I am about to make my traditionaal new years lentil soup…..but no sauteed garlic in your soup?
Hi Judith, no garlic in our recipe, however, if you want to add it to yours feel free to do so!
Made it once right by the book (recipe) a few months back and now I get a craving for it every two weeks or so. Good hearty stuff.
Historically, I’m not a fan of lentils. But this is so good. The olive oil added when serving is a get changer. I was surprised how much was added, but it is a great finishing touch with the grated cheese.
So happy you enjoyed!
I make this soup all the time now. It is delicious and comforting. yummmm Thank You
I’m going to try the Mushroom and Barley soup next, then the Italian Wedding soup.
We’re so happy you enjoyed it, Pauline!
Bravo, bravo, bravo! One of the best soups I have ever tasted.
We’re so happy to hear that, Christie!
Great as a slow cooker item.
Delicious and easy. Made enough for 3 meals!!
So happy you enjoyed!
Clear and easy to follow recipe & instructions resulting in delicious food! Thank you 👏🏼
So happy you enjoyed, Susanne!
Oops forgot to rate!
What an absolutely delicious soup that the whole family enjoyed. The flavours are subtle but perfect. Will definitely make again and thank you for the recipe.
We’re so happy you all enjoyed!