1Preheat oven to 350 °F. Prepare, bake and cool cake following package directions. Cut cake into 16 slices.
Combine cream cheese and confectioners' sugar in small bowl. Beat at medium speed with electric mixer until smooth.
To assemble, spread half the whipped topping in bottom of 13x9-inch pan. Arrange 8 cake slices on whipped topping: press lightly. Spread with cream cheese mixture. Arrange remaining cake slices on cream cheese mixture; press lightly. Spread with remaining whipped topping. Spoon cherry pie filling evenly over top. (Pan will be filled to the brim.) Refrigerate for 2 hours or until ready to serve. Cut into squares.