In a large mixing bowl, combine cake mix, water, oil, and egg whites.
Beat on low speed until moistened; beat on high for 2 minutes.
Gently fold in the crushed cookies.
Pour into 2 greased and floured 8-inch round cake pans.
Bake at 350° for 30 minutes or until tests done.
Cool for 10 minutes; remove from pans to wire rack to cool completely.