Butterscotch Pie - cooking recipe

Ingredients

1 (8-inch) baked pie shell
1 c. brown sugar
5 Tbsp. flour or cornstarch
dash of salt
1 2/3 c. milk
3 egg yolks, beaten
3/4 stick margarine
1 tsp. vanilla flavoring
Cool Whip

Preparation

Mix sugar, flour, salt and milk over low heat.
Add beaten egg yolks.
Continue cooking until thick (stir constantly).
Remove from heat and fold in margarine and vanilla.
Pour into baked pie shell and cool.
Top with Cool Whip.