Butterscotch Pie

1-1/2 cup light brown sugar
1/4 tsp. salt
2 tbsps. flour
3 tbsps. corn starch
1 1/4 cups hot water
2 egg yolks
1 tbsp. butter
1 tsp. vanilla
1 9" baked pie shell

Mix together first 3 ingredients in a saucepan. Add hot water stirring well. Cook until thick and clear. Beat egg yolks. Add small amount of heated mixture to yolks and mix well. Slowly pour the egg yolk mixture into the hot sugar mixture and stir constantly. Cook over low heat for 1 minute. Remove from heat and stir in butter and vanilla. Cool slightly and pour into baked pie shell. Top with Prepared meringue and serve.

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