Directions

1. Preheat oven to 425 degrees F. Line a baking sheet with foil.
2. Prick sweet potatoes in several places with a fork and place on the prepared pan. Bake until tender when pierced with a knife, 40 to 45 minutes. Let cool slightly.
3. Meanwhile, heat oil in a large skillet over medium-high heat. Add ground beef and scallion whites. Cook, stirring and breaking up the beef with a wooden spoon, until it is no longer pink, about 4 minutes. Add tomato paste, chipotles to taste, paprika, and salt. Cook, stirring, until the tomato paste begins to brown, about 1 minute. Add beans and water; cook, stirring, until most of the liquid has evaporated, about 1 minute more. Cover and keep warm.
4. Slice the sweet potatoes in half lengthwise. Leaving the skins intact, carefully scoop the flesh into a medium bowl. Add 1 cup of the chili mixture and stir to combine. Fill each potato skin with the sweet potato-chili mixture (the skins will be full). Return to the baking sheet and top with remaining chili mixture and cheese.
5. Bake until the cheese is melted and the potatoes are heated through, 3 to 5 minutes. Top with scallion greens and garnish with sour cream, if desired.