Christmas Tree Cakes

Cut cake in half lengthwise. Cut each half into 8 triangles to make 16 triangles total. Line a rimmed baking pan with parchment paper. Place a wire rack in the baking pan. Transfer cake triangles to wire rack; set aside.

Place white chocolate wafers in a medium microwave-safe bowl. Microwave on HIGH at 30-second intervals until melted, stirring each time. Break pretzel rods in half crosswise. Spray with gold food-color mist spray; let dry.

Dip one end of each pretzel half into melted chocolate and insert it into the bottom of each triangle, fully coating tops and sides. Spray milk chocolate stars with gold mist spray; add to tops of trees. Add nonpareils in rows to each tree; let dry.