1 c. brown sugar, packed
1/4 c. cornstarch
1/2 tsp. salt
1 c. water
1 2/3 c. milk
1/3 c. butter
3 egg yolks, slightly beaten
1 1/2 tsp. vanilla

Mix brown sugar, cornstarch and salt in saucepan. Gradually stir in water and milk. Cook over medium heat. Stir constantly, until mixture thickens and boils. Boil 1 minute. Remove from heat.

Gradually stir at least half of hot mixture into egg yolks. Then blend into hot mixture in a saucepan. Boil 1 minute more stirring constantly. Remove from heat. Add vanilla. Pour immediately into baked pie shell. Let cool at room temperature or put in refrigerator for 2 hours.