Simple Crockpot Lentil Soup

Featured in Warm Bowls of Goodness.

This slow-cooked lentil soup blends French green lentils, veggies like carrots and celery, and a flavorful tomato broth. Italian spices and smoked paprika add depth, while a splash of red wine vinegar brightens things up. Optional Parmesan gives richness. Easy to prep, perfect for busy days, and smells amazing while cooking.
A woman wearing a chef's hat and apron.
Updated on Thu, 10 Apr 2025 19:14:17 GMT
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Simple Crockpot Lentil Soup | mecooking.com
Homey pots of slow cooker lentil soup deliver warmth and sustenance with soft lentils, vibrant veggies, and fragrant herbs cooked to absolute deliciousness. This no-fuss dish turns basic cupboard staples into a filling meal that spreads wonderful smells through your house as it gently bubbles away all day long.

When I found this dish during a really busy time in my life, it quickly became my go-to for days when I need something wholesome but can't spend hours cooking. The way the lentils gradually soak up all those flavors while they cook makes every bite incredibly comforting.

Key Ingredients and Shopping Advice

  • Lentils: Go for green or brown varieties as they don't fall apart during long cooking. French ones work too but they'll need extra time.
  • Fire-Roasted Tomatoes: They bring a light smokiness you won't get from regular ones. Look for bright red cans without extra seasonings.
  • Smoked Paprika: Gives richness and cozy flavor. Try to find Spanish varieties for the most authentic taste.
  • Parmesan Rind: Not required but totally worth it. It slowly breaks down, adding amazing savory notes to your broth.
  • Fresh Vegetables: Get carrots that feel solid, celery with a snap, and onions without any soft parts.
  • Red Wine Vinegar: Adds a zing at the finish. Don't skimp on quality here for the best taste.

Crafting Your Delicious Soup

Step 1: Building Your Flavor Foundation
Start by warming olive oil in a big pan until it's glossy but not smoking. Toss in chopped onions, stirring now and then until they turn see-through and give off their sweet smell. This creates the taste foundation for your soup.
Step 2: Adding Flavor Boosters
Put carrots and celery in with your soft onions, cooking until they start to get tender. Mix in crushed garlic, smoked paprika, and Italian herbs, stirring constantly so they release their flavors without burning.
Step 3: Getting Everything in the Pot
Carefully move your cooked veggie mix to the slow cooker. Add washed lentils, both kinds of tomatoes, and veggie broth. Pop in the Parmesan rind and bay leaf, then give everything a good but gentle mix to make sure all ingredients blend together.
Step 4: The Waiting Game
Turn your slow cooker to low and let it work for 6-8 hours. This slow process makes the lentils tender while they soak up all the amazing flavors. Try not to lift the lid too much - you'll lose heat and make cooking take longer.
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Steaming Slow Cooker Lentil Soup | mecooking.com

Lentils have become a must-have in my kitchen, not just because they're cheap but because they're so flexible. My kids used to make faces at lentil soup, but they fell in love with this version thanks to its deep, almost meaty flavor profile.

Achieving That Perfect Consistency

Getting lentil soup just right depends on cooking time and how much liquid you use. Too much broth makes watery soup, while too little turns lentils to mush. The amounts I've listed here create that just-right, hearty thickness.

Making The Soup Your Own

Feel free to switch things up based on what you've got at home. Sometimes I throw in diced sweet potatoes or butternut squash for extra sweetness, or add a bunch of chopped kale near the end to boost nutrition.

Turning It Into A Full Dinner

Though filling by itself, this soup goes great with crusty bread or a simple salad. If you're not vegetarian, try sprinkling some crispy bacon pieces on top for an amazing texture contrast.

Chunky Slow Cooker Lentil Soup Pin it
Chunky Slow Cooker Lentil Soup | mecooking.com

This lentil soup has stuck with me through countless busy days and cold evenings. It shows how the most basic ingredients, given some time and care, can turn into something truly special.

Frequently Asked Questions

→ What kind of lentils should I use?
Go for French green or brown lentils since they keep their texture. Skip red lentils—they get too soft.
→ Is stovetop cooking an option?
Yep! Use a Dutch oven and simmer for about 25 minutes until the lentils are soft but firm.
→ How long can I store it?
Pop it in the fridge for up to 5 days or freeze it to keep for 3 months.
→ Do I need to soak lentils beforehand?
Nope! Just rinse them well and toss them into the slow cooker.
→ What pairs well with this soup?
Try crusty bread, a crisp salad, or a sprinkle of Parmesan with fresh parsley on top.

Crockpot Lentil Soup

Tender lentils with veggies and herbs make this cozy slow cooker soup. Perfect for a no-fuss, meatless dinner.

Prep Time
10 Minutes
Cook Time
360 Minutes
Total Time
370 Minutes
By: Mariana

Category: Soups & Stews

Difficulty: Easy

Cuisine: Mediterranean

Yield: 6 Servings

Dietary: Vegan, Vegetarian, Gluten-Free, Dairy-Free

Ingredients

→ Veggies

01 1 yellow onion, medium-sized, chopped up
02 3 celery stalks, sliced thin
03 4 garlic cloves, finely chopped
04 4 medium carrots, peeled and diced into 1/2-inch pieces

→ Pantry Essentials

05 1 can (15 oz) diced tomatoes, fire-roasted
06 1 1/2 cups green or brown lentils (French preferred)
07 1 can (15 oz) crushed tomatoes
08 2 tbsp olive oil, extra-virgin
09 4 cups vegetable broth, low in sodium

→ Flavor Boosters

10 1 tsp kosher salt
11 1/2 tsp ground black pepper
12 1 1/2 tsp Italian herbs mix
13 1/2 tsp smoked paprika
14 1 tbsp red wine vinegar
15 1/2 tsp sugar (granulated)

→ Extras for Serving

16 Parmesan rind (can cook with, optional)
17 Parsley, fresh and chopped up
18 Parmesan cheese, shredded

Instructions

Step 01

Warm olive oil in a big skillet on medium-high. Toss in onions and let them soften and brown a bit for 8 minutes. Stir in celery, carrots, and spices. Keep cooking for another 2 minutes. Quickly throw in garlic for 30 seconds, then move it all into the slow cooker.

Step 02

Combine lentils, both canned tomatoes, and the broth in your slow cooker. Cover it and let it go—cook for 3-4 hours on high or 6-8 hours on low. The lentils should get nice and tender, not super mushy.

Step 03

If the Parmesan rind was used, pull it out. Stir in some vinegar and a pinch of sugar. Check the consistency; add a bit more broth if it looks too thick for your liking.

Step 04

Scoop into bowls, sprinkle with parsley and Parmesan on top if you like. Serve with some crusty bread while it’s nice and warm.

Notes

  1. Stays fresh in the fridge for 5 days or freezes fine up to 3 months.
  2. Whip it up on your stovetop in around 25 minutes if needed.
  3. Avoid red lentils—they’ll get too mushy and fall apart.

Tools You'll Need

  • Large skillet for sautéing
  • Measuring tools for accuracy
  • A 6-quart (or bigger) slow cooker

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 240
  • Total Fat: 5 g
  • Total Carbohydrate: 36 g
  • Protein: 12 g