1. Place all ingredients in a food processor and pulse until well mixed, about 1 minute.
2. Remove butter from processor and spoon onto parchment paper. Roll into a log, using edge of baking sheet to form a tight log. Place in freezer for 15 minutes until firm.
3. Remove from freezer and roll again, unroll parchment paper.
4. In a small mixing bowl, combine coating ingredients, sprinkle mixture onto butter log and roll until completed covered.
5. Refrigerate roll for 30 minutes before serving.