In a medium bowl, stir together the cake mix and baking powder. Add eggs and oil, then mix until well blended.
Stir in chocolate chips, or your choice of additions. Drop by rounded spoonfuls onto cookie sheets.
Bake for 10 minutes in the preheated oven. Allow cookies to cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.
Notes
Everyone loves chocolate chips, and it’s something I always have a supply of in my freezer, but if you want to mix things up a bit, try some of these alternative mix-ins: