1Bake and cool cake as directed on package for angel food cake pan (tube pan). Remove from pan. Split cake horizontally to make 2 layers. (To split, mark side of cake with toothpicks and cut with long, serrated knife.)
2Beat milk and pudding and pie filling (dry) in large bowl, using wire whisk or hand beater, until blended. Fold in whipped topping.
3Spread half of the chocolate mixture between cake layers; spread remaining mixture over top. Refrigerate at least 1 hour but no longer than 24 hours. Sprinkle candy over top of cake just before serving. Refrigerate any remaining cake.