Butterscotch Pie

I remember eating butterscotch pie at Nappy's Restaurant in Simi Valley, Calif. when I was growing up....hope this tastes as good as I remember that pie tasting

Butterscotch Pie
1/2 c. butter or Oleo
1 c. water
2 egg yolks
1 c. brown sugar
2 1/2 tbsp. Cornstarch
1 1/2 c. milk
Brown butter in pan. Then add sugar and cook together, stirring constantly, until sugar is melted. Add water; stir slowly and cook until sugar is again dissolved. Combine cornstarch, egg yolks and milk, and add to sugar mixture. Cook until thickened. Pour in baked pie shell and top with whipped cream.