1. 1. Preheat the oven to 350°F (175°C) and grease a baking dish.

2. 2. Prepare the cake mix according to the package instructions and pour it into the greased baking dish.

3. 3. In a mixing bowl, prepare the instant vanilla pudding according to the package instructions.

4. 4. Pour the prepared pudding over the cake batter in the baking dish, spreading it evenly.

5. 5. Sprinkle the fudge brownie mix over the pudding layer.

6. 6. Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

7. 7. Allow the cake to cool slightly before serving with a dollop of whipped cream on top.