Directions

1. Preheat oven to 375 degrees F (190 degrees C). Brush pie crust lightly with egg white to seal. Bake in preheated oven for 10 minutes, or until light brown and crisp. Remove from oven and reduce temperature to 350 degrees F (175 degrees C).
2. In a small bowl, mix together the flour, brown sugar and salt; set aside. In the top of a double boiler over medium heat, scald the milk while stirring with a whisk. Slowly whisk in the flour mixture. Cook, stirring constantly until thickened; remove from heat.
3. Place the egg yolks in a medium bowl. Stir in 1/3 of the milk mixture to temper the yolks, Then pour the yolk mixture back into the pan. Return to the stove and cook, stirring constantly until thick. Remove from heat and stir in the butter and vanilla. Pour into baked pie crust.
4. In a large glass or metal mixing bowl, beat egg whites, cream of tartar and confectioners' sugar until stiff peaks form. Spread meringue over pie, covering completely.
5. Bake at 350 degrees F (175 degrees C) for 10 to 15 minutes, or until meringue is golden brown in spots.