This recipe is @70 years old.
It is now copywritten as I post it.
My grandmother was a pastry chef and made these cookies for me when I was knee high to a grasshopper.
Served with a glass of cold milk, I can think of nothing closer to heaven.
Miss you Nana.
This recipe is special.

You will need:

1 – cup of butter
1/2  cup sugar
1 – egg yolk
1 1/2 cups flour
1/2 cup of crushed potato chips
1 -tsp vanilla extract

Cream butter and sugar.
Add egg yolk, vanilla, potato chips and flour.
Mix.
Make small balls and press down with a fork.
Do not grease cookie sheet.
Bake at 350 for 15 minutes of less.
There ya go.
Awesome cookies at a fraction of the price of crappy store bought.
Chill the milk!