Kids of all ages will enjoy the old-fashioned flavor of this super-moist cake topped with a soft light frosting. "This dessert reminds me of the frozen Creamsicles I enjoyed as a child," remarks Star Pooley of Paradise, California.
In a large bowl, combine cake mix, Kool-Aid mix, water, eggs and oil; beat on low speed for 30 seconds. Beat on medium for 2 minutes.
Pour into an ungreased 13x9-in. baking pan. Bake at 350° for 25-30 minutes or until a toothpick inserted in the center comes out clean. Using a meat fork or wooden skewer, poke holes in cake. Cool on a wire rack for 30 minutes.
Meanwhile, in a large bowl, dissolve one package of gelatin in boiling water. Stir in cold water. Pour over cake. Cover and refrigerate for 2 hours.
In a large bowl, combine the milk, vanilla, pudding mix and remaining gelatin; beat on low for 2 minutes. Let stand for 5 minutes; fold in whipped topping. Frost cake. Refrigerate leftovers.