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July 26, 2026

Hearty Slow Cooker Lentil Soup Recipe for Cold Days

Red’s Nutrition Tip

Lentils are very high in fiber and a good source of plant-based protein making them a great addition to any vegetarian meal. One cup of cooked lentils provides nearly 18 grams and 15 grams of fiber, which is more than half of the recommended daily fiber intake for an adult female and nearly half of the recommended daily fiber intake for adult males (1).

How to Make Slow Cooker Lentil Soup

This crockpot lentil soup is so easy to make it hardly needs instructions! In fact, the slow cooker does most of the work so, once you’ve got things going, you can get on with your day and return to a delicious and nutritious home-cooked meal. Here’s how you’ll make it:

  • Add all the ingredients, except for kale and red wine vinegar, to a slow cooker.
  • Stir the ingredients to ensure that everything is well combined.
  • Turn on the slow cooker and cook on high for 3-4 hours or low for 6-8 hours.
  • Once cooked, stir in the kale, and vinegar, and cook for a final 10 minutes.
  • Serve with desired toppings and enjoy!

Lentil Cooking Notes:

– The lentils should be rinsed under cold water before cooking to remove any dust or debris.
– The lentils do not need to be cooked before adding them to the slow cooker, they must be added raw.
– You do not need to soak the lentils before adding them to the soup, however, they can be soaked to reduce the cooking time by up to half.

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Dietary Adaptations

Make it Gluten-Free: No adaptations are needed; this recipe is naturally gluten-free.

Make it Dairy-Free: Simply make the recipe as outlined and skip the addition of parmesan cheese when serving.

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