Press enough cookie dough into bottom of pie crust to fully cover bottom but not sides. It should be about 1/2 to 3/4 inch deep. You will have leftover cookie dough (hurray!)
Prepare cake mix according to box directions and pour over cookie dough until pie plate is almost full. You will have leftover cake mix (make cupcakes!)
Bake for about 45-55 minutes, or until toothpick inserted into center comes out clean.
Cool completely and frost the top. Add sprinkles, candles, sparklers and/or whatever else the occasion calls for.