1. Wash hands.
2. Preheat oven to 350 F degrees.
3. Prepare a 14" pizza pan with cooking spray and set aside.
4. Prepare Brownie as directed and stir in cookie crumbs. Bake for 18 minutes, or until done.
5. Sprinkle marshmallows over top of hot brownies. Bake for 3 minutes.
6. Sprinkle with nuts and candy, pressing lightly into softened marshmallows. Eat while still warm.