Preheat oven to 350°F (175°C). Line a baking sheet with parchment.

Beat butter and 1/2 cup powdered sugar until smooth. Stir in vanilla.

Mix flour, nuts, cinnamon, and salt in a bowl. Gradually add to butter mixture until it forms a dough.

Roll dough into 1-inch balls and place 1 inch apart on the sheet.

Bake 12–15 minutes, until edges are set but not brown. Let cool 5 minutes.

While warm, roll cookies in powdered sugar. Cool completely, then roll again for a snowy finish.