Add diced onions, carrots, celery and garlic. Sauté about 3 minutes or until vegetables begin to soften. Stir in red lentils, tomato paste, cumin, pepper and broth.
Set instant pot to pressure cook for 10 minutes on manual setting. Allow to pressure release naturally for 10 minutes before doing a quick release.
Using an immersion blender, purée until desired consistency. If not using this as a vegan recipe, you can add a tablespoon of plain yogurt to each serving. Serve with a side of chips or wedges of Heavenly Armenian Pita Bread.
Notes
If you choose to eat this as a non-vegan recipe, you can add a dollop of plain yogurt to the top of each bowl of soup.