Preparing the Vegetables and Greens
Wash the spinach and kale thoroughly to remove any dirt
Chop the kale into bite-sized pieces
Dice the onion and mince the garlic to have all your ingredients ready

Creating the Flavorful Base
Heat the olive oil in a large pot over medium heat
Add the diced onion and sauté until translucent, about 3 to 5 minutes
Stir in the minced garlic and cook for another minute until fragrant

Simmering the Soup
Pour in the vegetable broth and add the cubed sweet potatoes
Season with salt and black pepper
Bring the mixture to a gentle boil, then reduce the heat and let it simmer for 15 minutes or until the sweet potatoes are tender

Adding the Greens and Final Touches
Add the spinach and kale to the pot and stir until the greens are wilted, about 3 to 4 minutes
Squeeze in the lemon juice and adjust the seasoning with more salt, pepper, or red pepper flakes if desired
Serve warm and enjoy