1Rinse the lentils under cold water until the water runs clear.
In a large pot, heat the olive oil over medium heat.
Add the chopped onion and sauté until translucent, about 5 minutes.
Add the minced garlic and cook for another minute until fragrant.
Stir in the cayenne pepper and cumin, and cook for 30 seconds.
Add the diced tomatoes, tomato paste, and lentils to the pot.
Pour in the vegetable broth and bring the mixture to a boil.
Reduce the heat to low, cover, and let it simmer for 25-30 minutes, or until the lentils are tender.
Taste and adjust seasoning if necessary.
Serve hot and enjoy your Spicy Lentil and Tomato Soup.