Step 1

Preheat oven to 350 F. Grease a 9x13 baking dish and set it aside.

Step 2

Drain the pineapple well and reserve the juice.

Step 3

In a large mixing bowl combine the cake mix, vegetable oil/melted butter, water, eggs, and 2/3 cup crushed pineapple.

Step 4

Pour batter into the prepared baking dish and bake for 30-35 minutes or until a toothpick inserted in the middle of the cake comes out clean.

Step 5

Cool the cake to room temperature then use a wide straw or round wooden spoon handle to poke holes in the cake.

Step 6

Place the pudding mix, milk, and pineapple juice in a medium bowl and whisk to combine.

Step 7

Pour the pudding mixture over the cake and into the holes.

Step 8

Mix the remaining crushed pineapple with the whipped topping. Spread the mixture over the top of the cake.

Step 9

Refrigerate cake for four hours before serving.