Slow Cooker Lentil Soup

4.9 from 16 reviews

This Slow Cooker Lentil Soup recipe is the best “set it and forget it” healthy vegetarian soup with a hearty texture and umami flavour. Just turn on your crockpot and walk away.

  • Author: Olena of
  • Prep Time: 7 minutes
  • Cook Time: 4 hours
  • Total Time: 4 hours 7 minutes
  • Yield: 8 servings 1x
  • Category: Soup and Stew
  • Method: Slow cooker
  • Cuisine: Ukrainian


  • 2 medium onions, diced
  • 3 large celery stalks, diced
  • 3 large carrots, diced
  • 4 cups potatoes, diced
  • 2 cups corn, frozen
  • 1 1/2 cups green or brown lentils, rinsed & drained
  • 1 tbsp garlic powder
  • 2 tsp oregano
  • 1 tsp thyme
  • 3 tbsp soy sauce (I use Bragg liquid aminos)
  • 3 bay leaves
  • 5 whole peppercorns
  • 9 cups vegetable broth, low sodium
  • Garnishes: green onion, cilantro, parsley, Greek yogurt, cheese, tortilla chips


  1. In a large slow cooker, add onions, celery, carrots, potatoes, corn, lentils, garlic powder, oregano, thyme, soy sauce, bay leaves, peppercorns and vegetable broth. No need to stir.
  2. Cover and cook on Low for 8-10 hours or on High for 4-5 hours (with this soup longer is better).
  3. Discard bay leaves and peppercorns. Using an immersion blender, pulse a few times until desired texture – I like creamy with chunks.
  4. Garnish with herbs and Parmesan cheese/plain yogurt/tortillas chips and serve hot.

Store: Refrigerate in an airtight container for up to 5 days or freeze leftovers for up to 3 months.

Freezer Meal: In a large Ziploc bag, add all ingredients (except broth (water) and garnishes), release out air as much as possible, seal and freeze for up to 3 months. Thaw in a bowl/sink with hot water for 10 minutes, transfer to slow cooker, add water and cook as per instructions + 1 hour.

Make Ahead: In a large air tight container, Ziploc bag, bowl with a lid or slow cooker’s insert, add all ingredients (except garnishes) and refrigerate for up to 3 days. Cook as per instructions.


  • Broth: Alternatively you can use 2 organic low sodium vegetable bouillon cubes (like GoBio brand sold in many grocery stores) and 9 cups of water.
  • Lentils: You can use red lentils, just keep in mind they will fall apart a lot.

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