Unwrap the Little Debbie Christmas Tree Cakes and crumble them in a mixing bowl using a handheld mixer.

Scoop a tablespoon of the crumb mixture and roll into balls, placing them on a parchment-lined baking sheet. Refrigerate for 15 minutes.

Melt white chocolate in a microwave-safe bowl in 30-second intervals, stirring frequently until smooth, approximately 2 minutes.

Dip each truffle in the melted chocolate using a fork, allowing excess to drip off before placing back on the sheet.

Melt red candy melts in a ziplock bag, snip a corner, and drizzle over truffles. Sprinkle with green sanding sugar.

Refrigerate truffles for about 20 minutes until set. Let them sit at room temperature for 10 minutes before serving.