01 - Place the chopped white chocolate in a heatproof bowl and set aside.
02 - In a small saucepan, heat the heavy cream and butter over medium heat until just simmering, stirring occasionally.
03 - Pour the hot cream mixture over the chopped chocolate. Let sit for 1 minute, then stir vigorously until completely smooth and glossy.
04 - Fold in the crushed freeze-dried raspberries until evenly distributed throughout the ganache.
05 - Cover the bowl and refrigerate for at least 1 hour until the mixture firms enough to hold its shape when scooped.
06 - Using a small spoon or melon baller, scoop out small portions and quickly roll into balls between your palms. Place on a parchment-lined baking sheet.
07 - Freeze the rolled truffles for 15 minutes to firm before coating.
08 - Dip each chilled truffle into the melted white chocolate, allowing excess to drip off. Return to the lined baking sheet.
09 - Immediately sprinkle each coated truffle with a pinch of crushed freeze-dried raspberries before the chocolate sets.
10 - Refrigerate the completed truffles for 15 minutes until the coating is fully set. Serve chilled or store for later.