1. Place popcorn in a large bowl, discarding unpopped kernels. Stir in nuts and cranberries.
2. Microwave white chocolate morsels in a 2-cup glass measuring cup at HIGH 1 1/2 minutes or until melted and smooth, stirring at 30-second intervals. Pour over popcorn mixture, stirring until evenly coated.
3. Spread mixture in a 15- x 10-inch jelly-roll pan. Sprinkle evenly with cinnamon. Let stand 15 minutes or until chocolate hardens. Sprinkle with gold dust. Break into pieces; serve immediately, or store in an airtight container up to 3 days.