Preheat oven 350°F. Line baking sheets with parchment paper or coat with nonstick spray.
Combine brownie mix, all-purpose white flour, applesauce, water, egg, cinnamon, vanilla and chocolate chips in a large bowl. Place powder sugar in a small, shallow bowl. Drop teaspoons full of dough in to powder sugar. Coat each dough ball well with powder sugar. Place about 2 inches apart on parchment lines baking sheets.
Bake in preheated oven until cookies are just set, about 9 minutes.