01 - Place chopped white chocolate in a heatproof bowl, ensuring pieces are uniformly sized for even melting.
02 - Combine heavy cream and butter in small saucepan over medium heat. Bring to gentle simmer, watching closely to prevent boiling over.
03 - Pour hot cream mixture over chocolate. Let stand undisturbed for 1 minute, then whisk continuously until completely smooth and glossy.
04 - Fold crushed freeze-dried raspberries into ganache until evenly distributed throughout mixture.
05 - Cover bowl tightly and refrigerate for minimum 1 hour until mixture firms sufficiently for shaping.
06 - Using melon baller or small spoon, portion chilled ganache and quickly roll into uniform balls between palms. Place on parchment-lined baking sheet.
07 - Transfer baking sheet to freezer for 15 minutes to firm truffle centers before coating.
08 - Working quickly, dip each chilled truffle into melted white chocolate. Allow excess coating to drip off before returning to lined sheet.
09 - Immediately sprinkle each coated truffle with pinch of crushed freeze-dried raspberries while chocolate remains wet.
10 - Refrigerate completed truffles for 15 minutes until coating completely hardens. Serve chilled or store for later use.