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Home / Learn / Lentil and Vegetable Soup with Kale

Lentil and Vegetable Soup with Kale

Pasindu Wanniarachchi Β· 2 min read Β· Updated September 3, 2026

This lentil and vegetable soup is a deeply satisfying, fiber-rich meal that delivers serious nutrition without any fuss or complicated cooking steps. Packed with protein-dense red lentils, iron-rich leafy kale, and a classic aromatic base of carrots and celery, it is a wholesome, one-pot dish designed to keep you comfortably full for hours. Whether you are aiming to support steady daytime energy, improve daily digestion, or simply warm up with a comforting bowl of whole-food goodness, this soup hits every single mark.

From a nutritional perspective, this recipe is an absolute powerhouse for health-conscious meal preppers. Red lentils provide a massive dose of plant-based protein and slow-digesting complex carbohydrates, ensuring a gradual release of energy that prevents blood sugar spikes. The addition of fresh kale supplies an abundance of vitamins A, C, and K, while the root vegetables contribute valuable antioxidants and dietary fiber. It is a naturally low-fat, highly efficient meal that supports cardiovascular health and sustained satiety without weighing you down.

Meal Prep & Storage Tips

  • Refrigeration: Store the cooled soup in airtight glass containers in the fridge for up to 4 to 5 days. Lentil soups actually improve in flavor as they sit in the refrigerator overnight, as the rich vegetable broth fully permeates the lentils and spices.
  • Reheating: Warm the soup gently on the stovetop over medium heat, stirring occasionally. Because lentils naturally continue to absorb liquid as they sit in storage, you may need to add a small splash of water or vegetable broth to bring the soup back to your preferred consistency. You can also microwave individual portions in 90-second bursts.
  • Freezing: This soup freezes exceptionally well for up to 3 months. Portion the cooled soup into freezer-safe containers or heavy-duty bags, leaving an inch of head space for expansion. Thaw overnight in the refrigerator before reheating on the stove for a quick, effortless meal on busy days.
⏱️
15 minPrep Time
πŸ”₯
35 minCook Time
🍽️
6Servings
πŸ“Š
EasyDifficulty

Nutrition Per Serving

185Calories
10gProtein
32gCarbs
2gFat

Ingredients

  • 2 tbsp olive oil
  • 1 medium onion, diced
  • 2 medium carrots, diced
  • 2 stalks celery, diced
  • 3 cloves garlic, minced
  • 1 cup red lentils, rinsed
  • 6 cups vegetable or chicken broth
  • 1 can (14 oz) diced tomatoes
  • 1 tsp dried thyme
  • 1 tsp dried oregano
  • 4 cups fresh kale, stems removed and chopped
  • 1 tsp salt
  • Β½ tsp black pepper
  • 1 tbsp lemon juice
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Instructions

  1. Heat olive oil in a large pot over medium heat, then add onion, carrots, and celery and sautΓ© for 4–5 minutes until softened.
  2. Stir in garlic and cook for 1 minute until fragrant.
  3. Add red lentils, broth, tomatoes with juice, thyme, and oregano, and bring to a boil.
  4. Reduce heat and simmer for 20 minutes, stirring occasionally, until lentils are tender.
  5. Stir in the chopped kale and cook for 5 minutes until wilted.
  6. Season with salt, pepper, and lemon juice.
  7. Serve hot and store leftovers in the refrigerator for up to 5 days.

Kitchen Gear for Lentil and Vegetable Soup with Kale

ProductBest ForRatingPrice
Glass Meal Prep Set (5-pack)
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Glass Meal Prep Set (5-pack)
Editor's Pick
Glass Meal Prep Set (5-pack)
β˜…β˜…β˜…β˜…β˜… 4.8 Β· $22.99
View β†’
Etekcity Food Scale
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β˜…β˜…β˜…β˜…β˜… 4.7 Β· $39.99
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Cast Iron Skillet, 12"
Cast Iron Skillet, 12"
β˜…β˜…β˜…β˜…β˜… 4.9 Β· $29.90
View β†’
Pasindu Wanniarachchi

Pasindu Wanniarachchi is a senior web developer with over a decade of experience building digital platforms. As the creator of Nutrients Calculator, he combines his full-stack technical expertise with a focus on developing accessible, AI-powered health and nutrition tools.