In a large soup pot, heat olive oil over medium-high heat.
Add red bell pepper and onion and cook until slightly softened and translucent, about 5 minutes.
Add butternut squash and garlic, and cook another minute.
Season with curry powder, cumin, salt, turmeric, ginger, and cinnamon and stir well to combine.
Add vegetable broth and green lentils.
Bring to a boil, reduce heat to low and let simmer for 20-25 minutes, or until lentils are tender but still hold their shape.
Add coconut milk and kale, and cook another 5 minutes, until soup is warmed through again and kale is bright green.
Season with additional salt and pepper to taste.
Serve topped with plain yogurt and cilantro, if you like.
Enjoy!