Peel and cut the potato into 1-inch pieces, then boil until mashable.
Drain the potato pieces and mash them using a ricer, food mill, or fork.
Incorporate the mashed potatoes into the milk and yeast mixture along with flour, butter, sugar, egg, and salt.
Mix until a soft and pliable dough forms.
Let the dough rise.
Roll out the dough and fill it with butter and a cinnamon brown sugar mixture.
Roll it up and slice into rounds.
Let the rolls rise in the fridge overnight.
Bake the rolls and top with cream cheese frosting.
