1/2 cup butter, softened 
1 1/2 cups sugar 
1 tablespoon flour
3 large eggs
1 cup buttermilk 
1 teaspoon vanilla
1 (9-inch) pie crust

Heat oven to 350 F. In a large bowl, mix first six ingredients. Pour in pie crust. Bake 50 minutes to 1 hour. The top should be slightly browned.

Recipe Note: Place pie on a cookie sheet because it will have some spillage.