This makes the best family reunion dessert. It will go fast. If you have a jelly roll pan, you could make 2 of these and slide them side by side on that and then cover with the pudding and make a bigger cake.
Prepare and bake cake according to directions given on cake mix box using a 9x13 inch pan. Cool in pan. Prepare pudding according to directions. Pour on top of cooled cake. Pour cherries on top of pudding. Serve. Refridgerate leftovers.