Preheat oven to 350. Line an 8x8 or 9x9 baking dish with parchment paper or brush with flavorless oil and sprinkle with flour (such as Enjoy Life Foods All Purpose Flour Blend).
Unwrap 3-4 bags of the mini cookies and count out 14 whole cookies.
Mix together the brownie mix, ¾ c. water and the 2 T. flavorless oil. Scoop into the prepared baking dish. Press the unwrapped cookies into the top.
Bake at 350 for 35-40 minutes until cooked through.
Remove from the oven and cool about an hour.
Melt the dark chocolate morsels with the 1 t. flavorless oil in the microwave at 30 second intervals until smooth. Drizzle over the top of the brownies, let set another 30 minutes to an hour and enjoy!