Step 1: Make the DoughPreheat oven to 350°F (175°C). In a large bowl, combine the vanilla cake mix, softened cream cheese, melted butter, and egg. Stir with a spatula or wooden spoon until a soft, thick dough forms. The dough will be slightly sticky but manageable.Step 2: Shape and ArrangeScoop tablespoon-sized portions of dough and roll into balls. Place 2 inches apart on a parchment-lined baking sheet. For a classic look, gently flatten each ball slightly with the palm of your hand or the bottom of a glass.Step 3: Bake and CoolBake for 10 to 12 minutes, or until edges are lightly golden and centers are set. Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely. Serve warm or at room temperature.