Butterscotch Pie

Directions

1. 1
   Melt butter and add brown sugar.
2. 2
   Bring to boil; stir in water, stirring constantly.
3. 3
   Mix together cornstarch, flour, salt and milk.
4. 4
   Pour in butter and brown sugar mixture.
5. 5
   Bring to a boil.
6. 6
   Remove and add 3 beaten egg yolks.
7. 7
   Boil for 2 minutes. Add 1 teaspoon vanilla.
8. 8
   Pour in baked pie shell.
9. 9
   Cover with beaten egg whites.
10. 10
    Bake until top is brown.