Buttermilk Custard Pie Cuisine: American Author: Jane Kaylie Prep time: 5 mins Cook time: 40 mins Total time: 45 mins Serves: 4 Ingredients 1 (9 inch) unbaked pastry pie shell 1-1/4 cups (300 ml) sugar 1/4 cup (60 ml) flour 2 cups (475 ml) buttermilk 3 eggs 1 tsp (5 ml) vanilla extract 1/4 cup