Combine cookie crumbs and melted butter; stir well. Press into a lightly greased 13" x 9" x 2" pan. Bake at 350° for 15 minutes.
Sprinkle chopped candy bars and next 4 ingredients over crust. Combine egg and condensed milk; pour over chocolate morsels.
Bake at 350° for 35 minutes. Let cool completely. Cut into bars.
Note: For candy bars, we used Hershey's Cookies 'n' Mint bars. For white chocolate, we used Baker's.