Start by adding your cookies in a ziplock bag. Using a rolling pin, crush the cookies as best as you can. If there is larger pieces still in there, no worries. Add your crushed cookies in a bowl. Add your spices, brown sugar and mix thoroughly.
In a 13 x 9 pan, spray with nonstick baking spray. Add about 1/4 c or so of your cookie mixture to bottom of your pan.