Heat a large soup pot on medium-high heat. When the pot is hot, add 3 tablespoon vegetable broth and the onion. Cook, stirring frequently, until they are translucent. Approximately 7 minutes.
Add the remaining ingredients, except the kale, in a large stock pot and bring to a boil. Lower to simmer and cook for approximately 30 minutes or until the lentils are done. Add the kale and cook until wilted. Add the lime juice, stir, and enjoy!