Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking dish.

Prepare the Ultimate Fudge brownie mix according to the package instructions. Pour the brownie batter into the prepared baking dish and spread it evenly.

Bake the brownies in the preheated oven for about 20 minutes, or until they are set but not fully cooked through.

While the brownies are baking, prepare the Triple Chocolate cake mix according to the package instructions.

Once the brownies are partially baked, remove them from the oven and carefully pour the prepared cake batter over the top of the brownies.

Return the dish to the oven and bake for an additional 25-30 minutes, or until a toothpick inserted into the center comes out clean.

Once the cake is fully baked, remove it from the oven and allow it to cool slightly.

While the cake is still warm, drizzle the Hot Fudge topping over the top of the cake, allowing it to soak into the layers.

Serve warm with a scoop of vanilla ice cream or a dollop of whipped cream for an extra indulgent treat.