Marbled Cheesecake Bars
["2 c. vanilla wafer crumbs (60 wafers)", "1/3 c. cocoa", "1/2 c. confectioners sugar", "1/2 c. margarine, melted", "3 (8 oz.) pkg. cream cheese, softened", "1 (14 oz.) can sweetened condensed milk", "3 eggs", "2 tsp. vanilla", "2 sq. unsweetened baking chocolate"]
["Preheat oven to 300\u00b0.", "Combine crumbs, cocoa, sugar and margarine; press firmly on bottom of 13 x 9-inch pan.", "In large mixer bowl, beat cream cheese until fluffy; beat in condensed milk until smooth.", "Add eggs and vanilla; mix well."]
["vanilla wafer crumbs", "cocoa", "confectioners sugar", "margarine", "cream cheese", "condensed milk", "eggs", "vanilla", "chocolate"]