PIE is a popular dessert that can be made with either pecan or apple as the main ingredient. Pecan PIE is a traditional Southern dessert made with a pastry crust and a filling of eggs, butter, sugar, and pecans. Apple PIE is a classic American dessert made with a pastry crust and a filling of apples, sugar, and spices. Both pies are often served with a scoop of ice cream or a dollop of whipped cream.