Pistachio Pineapple Cake

1 3.4oz box pistachio pudding Pistachios, chopped for decoration
How To Make Pistachio Pineapple Cake
Preheat oven to 350 degrees and grease a 9×13 baking dish. In a large bowl, mix together the cake mix, pudding mix, oil, eggs, and pineapple with juices. Beat until well combined. Transfer batter to the prepared baking dish and bake for 30-35 minutes or until an inserted tooth pick comes out clean. Allow cake to cool. To make the frosting: Mix together the second pudding mix and milk until the mixture thickens. Fold in the cool whip until fully combined. Frost cake and chill for 2 hours before serving. Top with chopped pistachios if desired.