Preheat the oven to 350 degrees F.
Purée the beans, water, and oil in a blender. With a spatula, mix the cake mix in a large bowl with the eggs and puréed ingredients until smooth. Stir in the chocolate chips.
Using a teaspoon or cookie scoop, portion the batter on a cookie sheet. Place the dough 2 inches apart.
Bake 8 minutes, then remove the cookie sheet with oven mitts.
Let the cookies cool 10 minutes on cookie sheet and transfer to a cooling rack to finish cooling.