Preheat oven to 350 degree F. Line a baking sheet with parchment paper or silicone baking mat.
Beat butter and sugar in a large bowl using an electric mixer until fluffy. Beat in egg yolk and vanilla.
In another bowl, whisk together flour and salt; beat into the butter mixture until combined. Add crushed potato chips and chopped nuts.
Shape cookie dough into 1 ½-inch balls and place onto the prepared baking sheet 2 inches apart. Flatten each cookie dough with the palm of your hand.
Bake for 12-14 minutes or until edges are lightly brown. Cool cookies on baking sheet for a few minutes then transfer cookies to rack to cool completely.
Notes
Recipe adapted from: Melissa Peterman as featured in People Food