01 - Set oven to 400°F and line a baking sheet with parchment paper.
02 - Scrub sweet potatoes, pierce with a fork several times, place on baking sheet, and bake for 35–40 minutes until tender.
03 - Combine black beans, corn, red onion, bell pepper, cumin, smoked paprika, chili powder, salt, pepper, and 1 tablespoon olive oil in a large bowl; mix well and set aside.
04 - Remove sweet potatoes from oven, let cool 5–10 minutes, halve lengthwise, and scoop out most flesh leaving a ¼-inch border.
05 - Brush both sides of potato skins with remaining olive oil, place cut side up on baking sheet, and bake 8–10 minutes until edges crisp.
06 - Fill each potato skin with the black bean mixture and sprinkle shredded cheese on top.
07 - Return filled skins to oven and bake 5–7 minutes until cheese is melted and bubbly.
08 - Remove from oven and top with sour cream or Greek yogurt, chopped cilantro, diced avocado, jalapeño slices, and a squeeze of lime; serve immediately.