Step 1: Prepare the Cake Base

1. Preheat your oven to 350°F (175°C).

2. Prepare the cake mix according to the package instructions, using eggs, oil, and water.

3. Pour the batter into a greased 9×13-inch baking dish and bake as directed on the box, or until a toothpick inserted into the center comes out clean.

Step 2: Add the Caramel Mixture

1. Once baked, let the cake cool for about 10 minutes.

2. Using the handle of a wooden spoon, poke holes all over the cake, spacing them about 1 inch apart.

3. In a small bowl, mix the sweetened condensed milk and caramel sauce until smooth. Slowly pour the mixture over the cake, ensuring it seeps into the holes.

Step 3: Top the Cake

1. Allow the cake to cool completely before adding the toppings.

2. Spread the Cool Whip evenly over the top of the cake.

3. Crush the Butterfinger bars and sprinkle them generously over the Cool Whip layer.

Step 4: Chill and Serve

1. Cover the cake with plastic wrap and refrigerate for at least 2 hours to allow the flavors to meld.

2. Slice and serve chilled. Enjoy every gooey, crunchy bite!