preheat oven to 325°.
Prepare pie plate with pie crust.
Place pie plate on a baking sheet.
Beat sugar, eggs, buttermilk, melted butter, flour, vanilla, and salt until blended in a large bowl. Stir in coconut. Pour into crust.
Bake until the top is lightly golden brown and the center is almost set. About 50-60 minutes.
Cool on a wire rack