butter must be at room temp.In a large bowl mix butter,sugar,and vanilla.Beat until fluffy.
add flour 1 cup at a time.(I do this by hand)then add crushed potato chips.
roll into 1 inch balls, flatten with a fork dipped in powdered sugar. Bake at 325 degrees for 10 minutes. the edges and bottom of cookie should be golden brown.Sprinkle with powder sugar while still warm. let cool and sprinkle with more powder sugar....enjoy