This fantastic Lentil Soup is easy, healthy, and so flavorful! The simple pantry ingredients come together quickly on the stovetop to make a delicious and economical weeknight meal.
Place a large pot over medium-high heat. When the pan is hot, add the oil and swirl to coat the pan. Add the diced onions and saute for 3-5 minutes until they begin to soften. Add the garlic, carrots and celery and saute for another 8-10 minutes until they have softened.
Add the cumin, paprika, salt and pepper and cook for another 1-2 minutes until it becomes fragrant.
Add the lentils, 6 cups of broth, crushed tomatoes and tomato paste. Bring to a boil, then turn the heat all the way down to the lowest possible setting. Partially cover, and simmer gently for 30-40 minutes, or until the lentils are completely soft. If the soup is too thick for your liking, just add another 1-2 cups of broth and stir to combine.
If you want a thicker soup, you can either use an immersion blender to give it a few quick blends or remove 1 cup of the soup, and blend in a blender then return to the pot.
Add the lemon juice and zest of a lemon for a delicious bright flavor. Serve warm with crusty bread and enjoy!