Pre-heat the oven to 350°F degrees and grease a 9 x 13-inch baking dish.
Using an electric mixer and a large bowl, mix together the cake mix, pudding mix, oil, eggs and pineapple along with the juice: beat until well combined.
Transfer batter to the prepared baking dish and bake for 30 to 35 minutes or until an inserted toothpick comes out clean.
Remove from the oven and allow the cake to cool.