• 1 9x9-inch pan of brownies (baked and cooled)
• 1 package instant chocolate pudding mix (3.9 ounces)
• 1 can sweetened condensed milk (14 ounces)
• 8 ounces frozen whipped topping (thawed)
• 8 Oreo cookies (crushed into fine crumbs)
• edible Halloween-themed candy and headstone toppers