This recipe is not only easy but absolutely delicious!! 

PINEAPPLE SUNSHINE CAKE

Ingredients
Cake:

1. 1 box yellow cake mix
2. 4 eggs
3. 1/2 cup oil (I used vegetable oil)
4. 1 (8 oz) can crushed pineapple with juice

Frosting:

1. 1 (8 oz) container whipped topping, thawed
2. 1 small box instant vanilla pudding
3. 1 (8 oz) can crushed pineapple with juice

Instructions:

1. Preheat oven to 350 degrees. Spray a 9x13 pan with cooking spray.
2. In a large bowl, combine cake mix, eggs, oil, and 1 can of crushed pineapple with the juice. Mix well.
3. Pour into prepared baking pan and bake for 25-30 minutes, or until toothpick inserted in center of cake comes out clean. Allow to cool completely on a wire rack.
4. In a medium sized bowl, fold together whipped topping, box of vanilla pudding, and 1 can crushed pineapple with the juice. Spread over the top of cooled cake. Enjoy!

credit for this recipe:
 http://freerecipefoods.blogspot.com/2019/05/pineapple-sunshine-cake.html