Cool on a wire rack, add whipped cream, and serve. Bake in the preheated oven for about 1 hour, or until the filling is firm and a knife inserted in the center comes out clean. Along with sugar, salt, cinnamon, nutmeg, eggs and butter, all the ingredients are put into a food processor and blended until very smooth. This sweet potato pie is made very creamy with evaporated milk and gets a bit of a kick with rum. Pour the sweet potato filling into the prepared chilled pie shells. How to Make Sweet Potato Pie. Satisfy your sweet tooth with the best sweet potato pie recipes from the expert chefs at Food Network. The first thing you need to do when making a pie is prepare the crust.We love homemade crust and you can find all of our tips on making the best pie crust.If you’d like to take a shortcut, buy an unbaked refrigerated crust.