Heat the oven to 350°F and line a baking sheet with parchment.
Bake or microwave your sweet potatoes until soft. Scoop out the flesh, mash well, and let it cool slightly.
Flavor the mash: Stir in brown sugar, melted butter, vanilla, cinnamon, and nutmeg until fully combined.
Shape the balls: Cut each marshmallow in half. Scoop about 2 tablespoons of the sweet potato mixture into your hand, press a marshmallow half in the center, and wrap the potato around it to form a ball.
Add the crunch: Mix coconut and pecans in a shallow dish, then roll each ball to coat it completely.
Bake: Arrange on the prepared pan and bake for 12–15 minutes, just long enough to warm through and soften the marshmallow center.
Serve & Enjoy
TIP: Let them cool slightly before serving (the center will be molten!). These little bites pair beautifully with a ham dinner, Thanksgiving turkey, or even brunch.