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

In a large mixing bowl, add the cake mix, oil, and eggs. Stir the mixture until smooth and uniform, about 2-3 minutes.

Fold in your choice of optional mix-ins, such as chocolate chips or nuts, and combine gently.

Drop rounded amounts of dough onto the lined baking sheet, spacing them about 2 inches apart.

Bake for 12 minutes until lightly golden around the edges and set in the center.

Let cookies cool on the baking sheet for about 5 minutes before transferring to a wire rack.