Lentil Soup

Lentil Soup
⏱️ cook time 40 minutes
🍽️ servings 4
⚡ Difficulty easy

intro

Warm, protein-packed Mediterranean lentil soup with earthy vegetables and aromatic spices, made in one pot for easy cleanup, deeply comforting on cold days.

Ingredients

Dried red lentils (rinsed, debris removed) 200 g (1 US cup)
Extra-virgin olive oil 30 ml (2 tbsp)
Yellow onion (1cm dice) 150 g (1 medium)
Carrot (1cm dice) 100 g (1 medium)
Celery stalk (1cm dice) 70 g (1 large stalk)
Garlic (minced) 10 g (3 cloves)
Tomato paste 30 g (2 tbsp)
Ground cumin 2 g (1 tsp)
Smoked paprika 1 g (1/2 tsp)
Low-sodium vegetable broth 1000 ml (4 cups)
Fresh lemon juice 30 ml (2 tbsp)
Kosher salt 3 g (1 tsp)
Ground black pepper 0.5 g (1/4 tsp)
Fresh flat-leaf parsley (chopped, for garnish) 5 g (2 tbsp)

Steps

1

Prep all ingredients

First, rinse 200g dried red lentils under cold running water in a fine-mesh sieve, picking out any small debris or discolored lentils. Dice the yellow onion, carrot, and celery into uniform 1cm pieces, mince 3 garlic cloves, and measure out all spices, tomato paste, broth, and lemon juice before heating the pot to avoid mid-cooking scrambling.

Step 1
step1:Prep all ingredients
2

Sauté mirepoix base

Heat 30ml (2 tbsp) olive oil in a heavy-bottomed 4L soup pot over medium heat (160C/325F). Add the diced onion, carrot, and celery, cook for 7 minutes, stirring occasionally with a wooden spoon, until the vegetables soften and the onion turns translucent with light golden edges.

Step 2
step2:Sauté mirepoix base
3

Toast spices and paste

Add the minced garlic, 30g (2 tbsp) tomato paste, 2g (1 tsp) ground cumin, and 1g (1/2 tsp) smoked paprika to the pot. Stir constantly for 1 minute over medium heat, until the tomato paste darkens to a deep rust color and the spices release a warm, earthy aroma—do not burn the garlic or spices, as this will create a bitter, off flavor in the finished soup.

Step 3
step3:Toast spices and paste
4

Simmer lentils in broth

Add the rinsed red lentils and 1000ml (4 cups) vegetable broth to the pot, stir fully to combine. Turn heat to medium-high to bring the liquid to a rolling boil (4-5 minutes), then reduce heat to low (95C/200F), set the pot lid slightly ajar, and simmer for 20 minutes, stirring once at the 10-minute mark to prevent lentils from sticking to the pot bottom.

Step 4
step4:Simmer lentils in broth
5

Season and adjust texture

After 20 minutes of simmering, the lentils will be fully tender and partially broken down to create a naturally thick, creamy texture. Stir in 3g (1 tsp) kosher salt, 0.5g (1/4 tsp) black pepper, and 30ml (2 tbsp) fresh lemon juice. For a chunkier soup, leave as is; for a creamier texture, use an immersion blender to puree 1/3 of the soup directly in the pot, leaving plenty of soft lentil pieces for texture.

Step 5
step5:Season and adjust texture
6

Garnish and serve hot

Ladle the hot soup into 4 pre-warmed ceramic bowls, top each serving with a pinch of chopped fresh parsley, an optional light drizzle of olive oil, and a small lemon wedge for extra squeezing. Serve immediately while hot, paired with crusty whole-grain bread if desired.

Step 6
step6:Garnish and serve hot

Tips

1.Always rinse dried lentils before cooking to wash away residual dust, tiny pebbles, or debris that can make the soup gritty, and reduce excess foaming during simmering.
2.If using regular salted vegetable broth instead of low-sodium, cut the added kosher salt to 1.5g (1/2 tsp) initially, then taste and adjust seasoning at the end to avoid over-salting.
3.Lentil soup thickens dramatically as it cools; when reheating leftovers, stir in 30-45ml (2-3 tbsp) of water or extra broth per serving to thin it back to your preferred consistency.

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Lentil Soup:Frequently Asked Questions

1.Do I need to soak dried red lentils before making this soup?
No pre-soaking is required for red lentils, since they break down much faster than firmer green or brown lentil varieties. Just rinse them thoroughly in a fine-mesh sieve and pick out any tiny debris or stray pebbles before adding them to the pot. They’ll fully soften in 20 to 25 minutes of simmering to create that signature thick, creamy base without extra work.
2.Can I substitute green or brown lentils for the red lentils in this recipe?
You can swap in green or brown lentils, but note they hold their shape far better and have a firmer, earthier bite. Plan to add 10 to 15 extra minutes of simmer time to get them fully tender. Since they won’t break down to create a creamy base, you can blend one cup of finished soup and stir it back in if you want that classic thick texture.
3.Why does the recipe call for dicing onion, carrot, and celery to an even 1cm size?
That uniform 1cm dice (the base of classic mirepoix) ensures all three aromatic vegetables cook at the exact same rate. This means you won’t end up with undercooked crunchy carrot bits or mushy, overcooked onion by the time the lentils are done, and you’ll get a consistent, pleasant bite in every spoonful of finished soup.
4.Does this soup freeze well for make-ahead meals?
This soup freezes beautifully for up to 3 months. Let it cool completely first, then portion it into airtight, freezer-safe containers, leaving ½ inch of headspace to account for expansion as it freezes. Thaw it in the fridge overnight, then reheat gently over low stovetop heat, adding a splash of water if it thickened up too much in storage.
5.What Mediterranean spices work best to amp up the soup’s flavor?
Stick to warm, aromatic staples: ground cumin, smoked paprika, a pinch of dried oregano, and a tiny pinch of red pepper flakes for subtle heat work perfectly. Add them right after sautéing the mirepoix to toast for 30 seconds before adding lentils and liquid—this unlocks deeper, nuttier flavor instead of leaving spices tasting flat.
6.Do I have to blend this soup to get that thick, hearty texture?
No blending is required! Red lentils naturally break down and soften into a creamy, thick base as they simmer, so you’ll get that rich, hearty consistency without any extra equipment. If you prefer an extra-silky texture, use an immersion blender to puree 1/3 to 1/2 of the soup right in the pot, leaving some bits for texture.
7.What toppings work best to turn this soup into a full, satisfying meal?
Top each bowl with a drizzle of good extra-virgin olive oil, a squeeze of fresh lemon juice, a sprinkle of crumbled feta, chopped fresh parsley, or crispy toasted pita croutons. Pair it with warm crusty whole-grain bread or a simple side salad, and you’ve got a protein-packed, balanced meal perfect for lunch or dinner.
8.Can I make this soup in a slow cooker instead of on the stovetop?
Absolutely! Sauté the diced onion, carrot, and celery first (or use your slow cooker’s built-in sauté function) until soft, then add rinsed lentils, broth, and spices. Cook on low for 4 to 5 hours, or high for 2 to 2.5 hours, until lentils are fully tender. Give it a good stir and adjust salt to taste before serving.
9.Does the one-pot cooking method impact the soup’s flavor, or is it just for easy cleanup?
The one-pot method isn’t just for minimal dishes—cooking aromatics, toasting spices, and simmering lentils all in the same vessel lets layered flavors meld together as the soup cooks, so you don’t lose tasty browned bits from separate pans. It actually builds a deeper, more cohesive final flavor with far less active work.
10.My leftover soup got really thick in the fridge—how do I fix that?
That’s totally normal! Lentils keep absorbing liquid as they cool, so leftover soup will thicken up significantly after a day or two in the fridge. When reheating, stir in small splashes of vegetable broth, water, or a splash of tomato juice until it hits your preferred consistency, then add a tiny pinch of salt or lemon to brighten the flavors back up.

Comments (7)

2 days ago

OMG this soup is SO good! I threw it together on a busy weeknight after work and couldn’t believe it only took 40 minutes total. My 7 and 9 year old usually turn their noses up at lentils, but they asked for SECONDS. Served it with a side of crusty garlic bread for our family dinner and we had zero leftovers. 10/10 will be adding this to our weekly meal prep rotation!

yesterday

Totally agree about the kid approval! My two toddlers gobbled it up too, I didn’t even have to hide the veggies. I added a little extra lemon zest at the end and it popped so hard.

2 hours ago

So happy your kids loved it, Mia! The lemon zest trick Jake mentioned is such a good call — a bright squeeze of fresh citrus right before serving really makes those Mediterranean flavors sing. So glad it worked out for your busy weeknight meal prep!

5 days ago

Brought this to my neighborhood potluck last weekend and people were begging me for the recipe before we even got to dessert! It’s so hearty, even the diehard meat-eaters in the group said they didn’t miss the sausage or ground beef I usually dump in my lentil soup. Super easy to make a double batch too, which is perfect for feeding a crowd.

1 week ago

Really solid soup recipe, super easy to follow even for someone who burns toast half the time. I meal prepped 5 servings on Sunday and it held up great all week for work lunches. Only note is I wish it had a little more kick, so next time I’ll add a pinch of red pepper flakes when I sauté the veggies.

5 days ago

Thanks for the great feedback, Luke! A pinch of red pepper flakes is such a tasty addition — a few other readers have mentioned adding a dash of smoked paprika too if you want an extra layer of warm, smoky flavor next time you make it. So glad it worked for your weekly meal prep!

yesterday

Game changer! I’ve been making boring, bland lentil soup for years and never thought to add sun-dried tomatoes and oregano like this recipe says. It tastes like something I’d order at my favorite Greek diner for $12 a bowl, and I made it in my own kitchen for pennies.

2 hours ago

Right?! I made it last week and added a dollop of tzatziki on top instead of plain sour cream and it was chef’s kiss. You have to try it that way next time!

3 days ago

Made this last night when my in-laws stopped by unannounced and I had zero fancy ingredients in the pantry. I was panicking because I had nothing else to make, but I had a bag of lentils, a can of diced tomatoes, some sad carrots and celery in the crisper, and the random Mediterranean spices in my cabinet. It turned out so good my mother-in-law asked for the recipe to make for her book club! Wild.

2 days ago

That’s the best part of this recipe! It’s so forgiving if you don’t have every single ingredient — I was out of carrots once and used jarred roasted red peppers and it still slapped.

yesterday

Love hearing this, Joe! This soup is designed to be super flexible for random pantry staples, so I’m thrilled it saved the day during your unexpected in-law visit. That roasted red pepper swap Erin mentioned sounds absolutely delicious, I’ll have to test that in my next batch!

2 weeks ago

Made a big batch of this before a 3-day backpacking trip and portioned it out into vacuum-sealed bags to reheat on our camp stove. It was so warm and filling after long days on the trail, way better than the overpriced dehydrated backpacking meals I usually stock up on. Even held up great when it got down to 30 degrees overnight in the bear canister. 10/10 for both at-home weeknights and backcountry trips!

30 minutes ago

Wait, is this really considered easy? I’m literally the worst cook ever, I can barely make boxed mac and cheese without burning it, and I followed the directions step by step and it came out perfect??? I didn’t even have to Google how to sauté veggies because the instructions were so clear. My roommate came home and thought I ordered takeout lmao. Obsessed.

5 minutes ago

That makes my whole day to hear! This recipe was written specifically to be approachable for brand new cooks, so I’m so stoked it worked out for you — no fancy skills or equipment required. Can’t wait to hear what you cook next!