01 -
In a large mixing bowl, beat together the softened butter, vanilla extract, egg, and softened cream cheese until fluffy and well combined, using a hand mixer or stand mixer on medium speed.
02 -
Gradually add the yellow cake mix to the wet ingredients. Blend until everything is well mixed and forms a smooth, consistent dough. Continue mixing until all dry ingredients are fully incorporated.
03 -
Cover the bowl with plastic wrap and place in the refrigerator. Allow the dough to chill for 30 minutes to 1 hour until firm enough to handle.
04 -
Preheat oven to 350°F (175°C). Remove the chilled dough from the refrigerator and roll into 1-inch diameter balls. If using sprinkles, roll each ball in them first. Then coat generously with powdered sugar, rolling twice to ensure complete coverage.
05 -
Place the coated dough balls on a parchment-lined baking sheet, spacing them about 2 inches apart. Bake for 10-12 minutes, until edges are lightly browned but centers still appear slightly underbaked.
06 -
Remove from oven and let cookies cool on the baking sheet for 5 minutes to set. Transfer to a wire rack to cool completely before serving.