Preparation

• Line 9-inch square pan with foil; spray with cooking spray. Microwave butter in large microwaveable bowl on HIGH 30 sec. Stir in 2 cups marshmallows; microwave 45 sec. or until marshmallows are completely melted, stirring after 30 sec. Add cereal, graham snacks and remaining marshmallows; mix well.
• Press onto bottom of prepared pan; drizzle with chocolate.
• Let stand 1 hour before cutting into bars.