In a large mixing bowl add in the mashed sweet potatoes ground nutmeg, ground cinnamon, butter, sugar, bourbon vanilla extract, egg, and milk.
Mix Everything until well combined.
Spread the sweet potato pie filling all over the dough, then roll it up.
Cut the dough using butcher string ( watch video)
Butter a 9x13, then place the rolls into the bake dish.
Cover the rolls, then place them in a warm place.
Let the rolls rest for about 30 minutes.
Preheat the oven to 350 F.
Once the rolls have doubled in sized, bake them for 30 minutes.
Remove the rolls from the oven, and let cool.
Place a medium sized pan over medium heat.
Toss in 4 tbsp of butter, and 2 cups of marshmallows.
Mix, and stir until everything is completely melted.
Pour the marshmallow glaze over the rolls.
Let sit until they are cool enough to eat.
Serve and enjoy!