• 1 cup unsalted butter, softened
• 1 teaspoon vanilla extract
• 2 cups all-purpose flour
• 6 tablespoons powdered sugar
• 1 cup finely chopped walnuts
• ⅓ cup powdered sugar, or more as needed

Preheat the oven to 350 degrees F (175 degrees C). Cream butter and vanilla together in a medium bowl with an electric mixer until smooth, 2 to 3 minutes. Whisk flour and 6 tablespoons powdered sugar together in separate bowl. Add to the butter mixture and stir until just blended. Add walnuts and mix until incorporated; mixture may be crumbly. Take small scoops of dough and roll between your hands into 1-inch balls. Place balls 2 inches apart on ungreased cookie sheets. Bake in the preheated oven until edges are just turning golden, about 12 minutes. Remove from the oven and transfer to a wire rack to cool for 15 minutes. Place remaining 1/3 cup powdered sugar in a small bowl. Roll cooled cookies in the powdered sugar once or twice.