Gather the ingredients - * Pie crust * Mashed sweet potatoes * Eggs * Brown sugar * Granulated sugar * Butter * Vanilla extract * Evaporated milk * Cinnamon
Unroll the pie crust and place it into a 9" pie plate, crimping edges if desired.
In a large bowl, mix together the mashed sweet potatoes, brown sugar, granulated sugar, evaporated, melted butter, eggs, cinnamon, and vanilla until smooth.
Pour the sweet potato mixture into the prepared pie shell.
Baked in the preheated oven for 10 minutes before turning the oven down to 350 degrees F and continue baking for an additional 35-45 minutes, or until the pie is set through the center.
Allow to cool completely before slicing and serving.