To assemble cake, place cake layer on serving plate or cake stand, meringue-side-up. Place remaining 1/3 cup hazelnut spread in small microwavable bowl. Microwave uncovered on High 15 to 30 seconds or just until softened. Carefully spread softened hazelnut spread over meringue layer. Top with remaining cake layer, meringue-side-up. Top with dollops of whipped cream mixture, spreading slightly to cover top of cake. Garnish top with candies. Refrigerate until ready to serve.