This rustic soup is brimming with tender red lentils, chopped sweet carrots and fire roasted tomatoes in a savory tomato broth. It's a cozy, nourishing and delicious vegetarian (and vegan) soup that is ready to serve in less than an hour!
Set a large 6-8 quart soup pot over medium heat. Add the oil to the pot. Once hot, add the chopped onions, carrots, celery, and garlic. And sauté for 3-5 minutes until the onions are soft.
Add the vegetable broth, canned tomatoes, dried lentils, tomato paste, and Italian seasoning. Stir well to make sure the lentils don't stick together.
Bring to a boil, then lower the heat if needed and simmer the soup for 20 to 25 minutes, stirring occasionally. You can partially cover the pot while cooking for less splatter.
The soup is ready when the lentils are soft and the base has thickened. Taste, then salt and pepper as needed.
Video
Notes
Cool the soup completely before transferring to an airtight container, and keep in the refrigerator for up to 4-5 days.To Freeze: Cool the soup and transfer it to an airtight container. I suggest wrapping the container in a layer of aluminum foil for extra protection from freezer burn. Then store lentil soup in the freezer for up to 3 months. Thaw in the fridge before reheating.