Mars Chocolate North American introduces TWIX® Creamy Peanut Butter Cookie Bars which unite a layer of savory peanut butter on a classic TWIX® Cookie Bar, all coated with milk chocolate. The product became available in vending and micro markets in January 2015. TWIX® Creamy Peanut Butter Cookie Bars debut in two sizes: singles (which include two bars) and the sharing size called “4 to Go" with four bars. TWIX® Creamy Peanut Butter Cookie Bars are kosher certified.