Preheat your oven to 400°F.
Line a baking sheet with aluminum foil.
Wash and scrub the sweet potatoes thoroughly.
Pierce them several times with a fork to allow steam to escape while baking.
Place the sweet potatoes on the prepared baking sheet.
Bake them for 45-60 minutes, or until they are tender when pierced with a fork.
Remove the sweet potatoes from the oven.
Cut a slit across the top of each one and gently squeeze the ends to open them up a bit.
Add butter, brown sugar, and cinnamon into each potato.
Top with mini marshmallows and drizzle with caramel sauce.
Place the sweet potatoes back in the oven for 2-4 minutes.
Toast them until the marshmallows are golden and puffy.