In large pot, sauté onion and bell pepper in half of the orange juice for 8-10 minutes until onion is soft and translucent.
Add all remaining ingredients except for the kale.
Bring to a boil, then reduce heat to simmer for 25-30 minutes until the sweet potatoes are soft, but not mushy.
Turn off heat and stir in kale so it wilts, then serve. Great with a piece of cornbread on top!