Step 1: Preheat the Oven

1. Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.

Step 2: Prepare the Cookie Dough

1. In a large mixing bowl, combine the yellow cake mix, softened butter, egg, cream cheese, and vanilla extract. Mix until well combined and a soft dough forms.

Step 3: Shape the Cookies

1. For easier handling, chill the dough in the refrigerator for about 30 minutes (optional but recommended).
2. Scoop out tablespoon-sized portions of dough and roll them into balls.
3. Roll each ball in powdered sugar until fully coated.

Step 4: Bake the Cookies

1. Place the coated dough balls on the prepared baking sheet, spacing them about 2 inches apart.
2. Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden but the centers are still soft.

Step 5: Cool and Serve

1. Once out of the oven, let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack. Dust with additional powdered sugar if desired.
2. Serve warm or at room temperature. These cookies are best enjoyed fresh!