Preheat oven to 350℉.
Pierce NC sweetpotatoes with a paring knife or fork. Bake for 45-minutes until fork-tender.
Meanwhile, in a large sauté pan, heat olive oil over medium-high heat.
Add cumin seeds and toast until fragrant, about 30 seconds.
Add shallots and sauté until fragrant and translucent or lightly brown, about 3 minutes.
Add tomato paste and lightly brown, about 2 minutes.
Reduce heat to medium and add chili crisp, salt, and ground lamb.
Cook over medium heat, stirring occasionally, until lamb is cooked through, about 7 minutes.
To assemble, slice sweetpotatoes lengthwise 2/3 through and press open. Top each sweetpotato with ¼ of the sauce mixture, one Tablespoon crème fraiche, ¼ of the sliced scallions and ¼ of the chopped mint leaves.