• Add the candy wafers to a microwave-safe bowl and microwave in 30-second intervals, stirring between each interval, until completely melted and smooth.
• Spoon about 2 tablespoons of melted candy wafers into each silicone mold. Use the back of a spoon to spread the melted chocolate evenly across the bottom of each mold.
• Place the molds in the refrigerator until the candy coating has completely hardened.
• In a large stockpot, melt butter over medium low heat.
• Once butter is melted, add in marshmallows. Gently stir frequently until all marshmallows are melted.
• Remove from heat and add in vanilla and sweetened condensed milk. Stir until well combined.
• Fold in Rice Krispie cereal and stir until well coated.
• Remove the molds from the refrigerator and spoon the Rice Krispie mixture into each mold. Press down firmly to fill each mold evenly and create a compact tree shape.
• Return the molds to the refrigerator for about 45 minutes, or until the treats are fully set.
• Carefully pop each Rice Krispie tree out of the silicone molds.

Optional Decorating

• Melt additional candy wafers in a microwave-safe bowl, using 30-second intervals and stirring until smooth. Drizzle the melted chocolate over the top of each Rice Krispie tree.
• While the chocolate is still wet, add your favorite Christmas sprinkles or other festive decorations.
• Allow the chocolate to harden completely before serving or packaging for gifts.