1 (9 inch) baked pie shell
1 c. dark brown sugar
3 tbsp. cornstarch
1/2 tsp. salt
3 egg yolks, slightly beaten
6 tbsp. butter
1 c. boiling water
2 tbsp. flour
1 2/3 c. milk
1 tsp. vanilla

Melt butter in skillet over low heat. When golden brown add brown sugar. Boil 2 or 3 minutes until foamy, stirring constantly. Stir in water and remove from heat. In saucepan mix cornstarch, flour and salt. Stir in milk gradually until smooth then stir in brown sugar mixture. Cook over low heat, stirring constantly until boiling. Boil 1 minute. Remove from heat stir in half of mixture into egg yolks, then blend into remaining hot mixture. Boil one minute longer. Remove from heat and stir in vanilla. Cool, stirring occasionally. Pour into baked pie shell and chill.