Cream together the butter and sugar , beat until smooth
Add one egg at time beating in between each egg
Beat in flour , salt and vanilla
Slowly beat in buttermilk , beat until smooth
Pour into an unbaked pie crust
Bake in a 325 degree oven for 55 minutes to 1 hour or until set . It may slightly jiggle a little in the middle but not be liquid like .
Notes
This pie is done when the edges have set and the top lightly golden. The center may still have a slight jiggle when you remove it from the oven, but it will continue to set as the pie cools.If you don't want the crust to get overly brown you can shield the crust for half of the baking time . We never stored this pie in the fridge but to be on the safe side I would store leftovers in the fridge.