Sweet potato pie is a traditional pie with origins in the southern parts of the United States of America, and it's especially popular in North Carolina. The dessert is prepared as an open pie without the top crust; its interior usually filled a combination of milk, eggs, sugar, and mashed sweet potatoes.
It is often flavored with spices such as vanilla or nutmeg in the South, while in the North, some like to top the pie with marshmallow pieces. The tradition of making sweet potato pie in the South has been present since the days of slavery, and African slaves were the first ones to make the dish.