1. Prepare for Baking:
   Preheat your oven to 350°F (175°C).
   Line two baking sheets with parchment paper.
2. Mix the Dough:
   In a large mixing bowl, beat together the softened cream cheese, butter, egg, and vanilla extract using an electric mixer until smooth.
   Gradually stir in the cake mix until a thick dough forms.
   Gently fold in the holiday sprinkles, being careful not to overmix to prevent color bleeding.
3. Chill the Dough:
   Cover the bowl with plastic wrap and chill the dough in the refrigerator for at least 30 minutes to make it easier to handle.
4. Form the Cookies:
   Scoop out 1½-inch balls of dough and roll each one in powdered sugar until fully coated.
   Place the dough balls on the prepared baking sheets, spacing them about 2 inches apart.
5. Bake:
   Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers look slightly soft.
6. Cool:
   Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.

Storage and Freezing:

• Store: Keep cookies in a single layer in an airtight container at room temperature for up to 3 days.
• Freeze: Place cookies in an airtight container or freezer bag and freeze for up to 3 months. Thaw at room temperature before serving.