9 inch baked pie shell
2/3 c. sugar
1/4 c. cornstarch
1/2 tsp. salt
3 c. milk
4 egg yolks, slightly beaten
2 tbsp. butter, softened
1 tbsp. plus 1 tsp. vanilla

Stir together sugar, cornstarch and salt in saucepan. Blend milk and egg yolks; gradually stir into sugar mixture. Cook over medium heat, stirring constantly, until mixture thickens and boils. Boil and stir 1 minute. Remove from heat; blend in butter and vanilla. Immediately pour into baked pie shell; press plastic wrap onto filling. Chill at least 2 hours.