Old Fashioned Buttermilk Pie

Ingredients
- 1 Tbsp unsalted butter
- 3 large eggs
- 12 c buttermilk
- 9-inch unbaked pie crust
- 1 14 c sugar
- 1 Tbsp flour
- 1 tsp vanilla
Directions
- Preheat oven to 300
- Beat butter and sugar in large mixing bowl
- Stir in eggs flour buttermilk and vanilla
- Pour into pie crust
- Bake until the tip of a knife inserted in the center comes out clean about 45 minutes
- Cool slightly before serving