Preheat the oven to 350 F. In a large bowl, combine cake mix with eggs and vegetable oil until smooth. Fold in the crushed Oreo cookies. Combine the granulated sugar and ground cinnamon in a shallow dish.
Use a cookie scoop to form the cookie dough into balls, and roll each one into the cinnamon sugar mixture. Place the cookies onto a large ungreased baking sheet. Bake for 10-12 minutes.