This soup is so hearty and delicious, made with sweet potato, kale, tomato, and onions. It's simple and comes together in less than 30 minutes. Enjoy this soup on its own or as a delicious side to a nourishing salad.
Warm the oil on medium-low heat in a medium pot. Add onion and garlic. Saute until onions are translucent, stirring occasionally, about 3 minutes.
Add sweet potato, tomatoes, vegetable broth, bay leaf, salt, pepper, and cumin. Increase the heat to medium and stir well. Bring to a boil. Immediately lower the heat to medium-low for a simmer.
Cover the pot and let the soup simmer for about 20 minutes, until sweet potatoes are cooked through.
Remove the bay leaf and gently fold in the kale into the soup. Add lemon juice and adjust seasoning, if needed. Serve or store for later.