01 - Preheat oven to 350°F. Grease and line a 9x13-inch baking pan.
02 - Combine cake mix, eggs, oil, and water in a large bowl. Mix until smooth and pour into prepared pan. Bake for 25-30 minutes until a toothpick inserted in the center comes out clean. Allow to cool completely.
03 - Crumble the cooled cake into fine crumbs using your hands or a fork.
04 - Beat softened cream cheese and powdered sugar (if using) until smooth and creamy.
05 - Add cream cheese mixture to cake crumbs. Mix thoroughly until fully combined and dough-like consistency forms.
06 - Scoop tablespoon-sized portions and roll into smooth balls. Place on parchment-lined baking sheet.
07 - Freeze cake balls for 20-30 minutes until firm enough to handle without breaking.
08 - Microwave white chocolate chips with coconut oil (if using) in 20-second intervals, stirring between each, until completely smooth.
09 - Using a fork, dip each chilled ball into melted white chocolate, allowing excess to drip off. Return to clean parchment-lined sheet.
10 - Sprinkle with decorations immediately while chocolate is wet. Refrigerate for at least 30 minutes until coating is completely set.