Preheat oven to 425 degrees F. Prepare pie pastry.
In a large bowl, combine sugar, flour, and 1/2 cup buttermilk. Add beaten eggs and the remaining 1/2 cup buttermilk; mix well with a whisk.
Mix in the melted butter and vanilla extract.
Pour into prepared pie crust. Sprinkle chopped pecans over the top.
Remove from oven and let cool on a wire rack. Refrigerate after cooling.
Makes 1 delicious pie.
Old Fashioned Buttermilk Pie Recipe: https://whatscookingamerica.net/ButtermilkPie.htm