01 -
Preheat the oven to 350°F (175°C). In a large mixing bowl, combine the chocolate cake mix, instant chocolate pudding mix, and milk. Stir until fully combined. Fold in the mini chocolate chips.
02 -
Transfer the batter into a greased 9x13-inch baking dish. Spread evenly. Bake for 35–40 minutes, or until a toothpick inserted into the center comes out clean.
03 -
Allow the cake to cool completely. Use the handle of a wooden spoon to poke evenly-sized holes across the surface of the cake. Pour the warmed hot fudge sauce over the cake, ensuring it seeps into the holes.
04 -
Spread whipped cream or whipped topping over the cooled and fudged cake. Sprinkle with crushed Oreos or chocolate cookie crumbs. Add additional chips or cookies if desired.
05 -
Chill the cake in the refrigerator for at least 1 hour to allow the layers to set. Serve slices chilled or warm, as preferred.