Looking for a cook 'n serve Jello pudding and Cool Whip cake frosting recipe.?

I made this many years ago and never kept the recipe. It was made with 6 oz. box of Jello cook 'n serve lemon pudding and Cool Whip. I remember cooking the pudding as directed on the box and mixing it with an 8 oz. carton of Cool Whip. It frosted and filled a 10'; tube cake. Either the filling took more pudding with less Cool Whip and the frosting took more Cool Whip than pudding, or vise-versa. Or, does anyone have a recipe close to this that is firm enough to stay on a 10'; tube cake? From now on I write these recipes down!!Looking for a cook 'n serve Jello pudding and Cool Whip cake frosting recipe.?
1 sm. box instant vanilla pudding


1 c. milk


1 sm. container Cool Whip





Mix instant vanilla pudding and milk together; add Cool Whip and mix again. (Cool Whip needs to be thawed.)