This is a really yummy cake and is fun to make!
1 box yellow or white cake mix
1 (3 oz.) box red jello
1 (8 oz.) carton Cool Whip topping
Optional flavor combination: lemon cake mix - orange or lemon jello
Bake cake according to package directions. While cake is cooling in its pan, poke holes all over with large fork. Mix jello according to package directions. Drizzle jello liquid over cake. Make sure jello penetrates all holes. Chill several hours or overnight. Frost chilled cake with whipped topping. Serve.
You could probably even tint your Cool Whip blue for a fun effect! :)