01 - Line a baking sheet with parchment paper or silicone baking mat.
02 - In a large mixing bowl, mix toasted almonds, dried cranberries, orange zest, and lemon zest until evenly distributed.
03 - Place chopped white chocolate in a heatproof bowl and melt over simmering water, stirring until smooth, or microwave in 30-second intervals, stirring between bursts.
04 - Pour melted white chocolate over the almond and cranberry mixture and stir thoroughly to coat all ingredients evenly.
05 - Using a tablespoon, drop spoonfuls of the mixture onto the prepared baking sheet, spacing slightly apart.
06 - While clusters remain soft, sprinkle candied orange peel and chopped pistachios over each cluster as desired.
07 - Let clusters set at room temperature for about 20 minutes or refrigerate for 10 minutes until firm.
08 - Transfer set clusters to an airtight container and keep in a cool place for up to one week.