Prepare cake mix according to package directions, using a greased 13-in. x 9-in. x 2-in. baking pan. Bake at 350° for 30-35 minutes or until a toothpick comes out clean. Dissolve gelatin in boiling water. Cool cake on a wire rack for 3-5 minutes. Poke holes in cake with a meat fork; gradually pour gelatin over cake. cool for 15 minutes. Cover and refrigerate for 30 minutes.
In a mixing bowl, beat cream cheese until light. Fold in whipped topping. Carefully spread over cake. Top with the pie filling. Refrigerate for at least 2 hours before serving.