Preheat oven to 375 degrees.
In a large bowl, beat sugar, butter, egg yolk, and vanilla until
light and fluffy. Add flour to the sugar mixture. Mix well. Add
crushed potato chips and nuts and stir by hand.
Roll dough into 1 inch balls. Place 3 inches apart on ungreased
cookie sheet. Dip bottom of a glass into the remaining sugar and
flatten the balls.
Bake at 375 degrees for 12 to 15 minutes or until golden brown. Cool
slightly. Remove from cookie sheet and enjoy.
Shared by Kirby, December 15, 1996