Rinse the lentils thoroughly.
Finely chop the onion, carrot, and celery.
Heat olive oil in a pot and sauté the onion, carrot, and celery.
Add minced garlic and sauté.
Add the lentils, chopped tomatoes, and vegetable broth.
Season with salt, pepper, and herbs, then bring to a boil.
Simmer over medium heat until the lentils are tender.
Use a hand blender to puree smooth, if desired.
Serve the finished soup in a bowl and drizzle with a little olive oil.