pineapple cake like gramma makes

Mix 1 pkg yellow cake mix and bake in 9×13 pan. Cool

Then mix 1 1/2 cups milk and 1 pkg vanilla pudding.  Then mix in 1 pkg cream cheese.  Pour this onto cooled cake.  Then pour on drained can of crushed pineapple.  Then spread on container of cool whip.  Serve.  Keep covered and cool.