Preheat the oven to 350 F. In a large bowl, mix together the brownie mix, eggs, and vegetable oil until smooth. In a shallow dish, combine granulated sugar and ground cinnamon.
Roll the cookie dough into balls, and roll each one into the cinnamon sugar mixture. Place onto a large ugreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.