from Tasty Kitchen
Stir together brownie mix, flour, and sugar. .Using a heavy spoon, stir in the eggs one at a time, followed by butter and 2 tablespoons water. If the batter appears like there is too much flour, add 1 more tablespoon of water. Batter will be very thick. Fold in chocolate chunks. Cover and refrigerate for 2 hours.
Preheat oven to 350 degrees.
On a lightly greased cookie sheet drop heaping tablespoons of dough on the cookie sheet. You want pretty thick cookies here to get the brownie feel, about 3 inches apart. Press down slightly. Don’t flatten completely. Bake for 8-10 minutes.
Remove from oven, allow to cool 2 minutes on cookie sheet. Transfer to a cooling rack to cool completely.