This one is fairly easy. It's also very good and a fun one to experiment with. The kiddos might really like this one, both the eating and the making!
Poke Cake
Baked Cake, any type or flavor. You can use a box mix or bake a cake from scratch. Any flavor will do, but plain white cake always works well. After the cake is baked & cooled, poke several holes in it. You can use a fork or a straw, poke a LOT of holes in it and make sure that they go to the bottom.
Jello, flavor of your choice.
Prepare jello according to package directions, 1 cup boiling water with jello stirred in and then 1 cup cold water stirred in once jello is dissolved. Pour the jello over the cake, covering all of the cake. Then cover with foil and put in the refrigerator for several hours. As the jello sets, it will be drawn up into the cake. When it's cut, it will be marbled.
Frost with any icing you desire. When my mom used to make this, she would use whipped topping instead of icing and it was wonderful!
You can experiment with this one, try different flavors of cake and/or jello. I remember that mom would mix in soda with the jello. It seems like she used soda in place of the cold water, but I can't find her recipe so I'm not sure on that. But try it if you feel like it. She would use Big Red with cherry or strawberry jello, I think that lemon or lime jello would work well with Sprite or 7Up. Any uneated cake will need to be refrigerated, especially if you do use whipped topping.