1 (20 ounce) package chocolate brownie mix with pecans
1 (3.9 ounce) package instant chocolate pudding mix
1 cup milk
1 (8 ounce) container frozen whipped topping, thawed
1/4 cup shaved semisweet chocolate, for garnish (optional)

Make brownies in a 9x13 inch pan according to package directions. Bake and cool.
In a small bowl, combine pudding mix and milk. Whisk until smooth. Allow to set up 5 minutes, then spread over cooled brownies. Spread whipped topping over pudding layer. Garnish with shaved chocolate and crushed chocolate wafers immediately before serving. Store leftovers in refrigerator.