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A bowl of red lentil soup on a marble counter top.
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4.96 from 22 votes

Vegan Red Lentil Tomato Soup

An Italian lentil soup recipe featuring tender lentils in a tomato-y broth that's easy to make in 30 minutes and a great way to include nutritious lentils in your diet.
Prep Time10 minutes
Cook Time25 minutes
Course: Soup
Cuisine: Italian
Diet: Vegan
Servings: 6
Author: Deryn Macey

Ingredients

  • 1 tbsp extra virgin olive oil use water or broth for oil-free
  • 1 medium white or yellow onion diced
  • 5 cloves garlic minced or grated (about 3 tbsp)
  • 3 medium carrots peeled and diced (approx. 1.5 cups)
  • 4 stalks of celery diced (approx. 1.5 cups)
  • 1/2 tsp black pepper
  • 1 tsp dried oregano
  • 1 tsp dried basil
  • 1/2 tsp ground thyme
  • 1/4 tsp red pepper flakes optional
  • 5-6 cups of vegetable stock
  • 1 cup uncooked red lentils
  • 1 28- oz can of diced tomatoes with the juices
  • 2 bay leaves
  • 1 tbsp lemon juice
  • sea salt and additional pepper to taste

Instructions

  • Heat Oil: Heat the oil in a large soup pot over medium heat. If you're not using oil, just add the onion with 1-2 tbsp water or broth.
  • Saute Onion: Add the onion and a pinch of salt and cook for 4-5 minutes, stirring often.
  • Add Fresh Veggies: Add the garlic, celery and carrot and cook for another 3-4 minutes until softened, stirring often.
  • Add Seasonings: Add the pepper, dried herbs, red pepper flakes, if using, and the bay leaf. Cook for 1 minute while stirring.
  • Add Liquids and Simmer: Add 5 cups of the stock, red lentils and diced tomatoes and bring to a light simmer. Start with 5 cups of broth and if needed, slowly add a bit more broth or up to a cup of water as it cooks to adjust the thickness. Simmer lightly, uncovered, until the lentils are tender, about 15-20 minutes.
  • Season and Serve: Season with salt and additional pepper, to taste, and add a squeeze of lemon juice. Remove the bay leaves and serve right away. 

Notes

Make the recipe oil-free by omitting the oil and sautéing the veggies in broth or water.
This recipe works with brown or green lentils but will require a slightly longer cooking time and have a firmer texture in the final soup.
Leftovers can be stored in the fridge for up to 5 days or frozen for up to 3 months.

Nutrition

Serving: 1/6th of recipe | Calories: 193kcal | Carbohydrates: 33g | Protein: 10g | Fat: 3g | Sodium: 138mg | Fiber: 8g | Sugar: 6g