With fork (do not use spoon), mix together the cake mix, pie filling and eggs. Add sour cream. Spoon into a 10X14-inch baking dish. Bake at 350 degrees for 30 minutes.
Cool completely.
Mix together cream cheese, instant pudding, crushed pineapple, with juice, and fold into the whipped topping. Spread on cool cake. Refrigerate until ready to serve.