Prep: 1. Preheat oven to 400. 2. Line a baking sheet with parchment paper. Make: 1. In a bowl, beat butter with vanilla, granulated sugar, and confectioners' sugar for about 1 minute until creamy. 2. Add flour and salt and mix until just combined. 3. Using your hands, roll batter into small balls, the size of a walnut. Place them on the lined baking sheet and gently press a nut into each. 4. Bake for 10-12 minutes, until barely golden. Make sure they don't brown. 5. Let cookies cool for about 5 minutes, then roll them (while still hot) in confectioner's sugar to coat. Let them cool completely, then roll them in confectioners' sugar once more.
Feel free to replace walnuts with pecans.