Step 1: Bake the Cake

1. Prepare the yellow cake mix according to the package directions.
2. Bake in a 9x13-inch pan.
3. Once baked, let the cake cool for about 10 minutes.
4. Using the handle of a wooden spoon or a straw, poke holes all over the surface of the cake.

Step 2: Prepare the Pudding

1. In a large mixing bowl, whisk together the vanilla pudding mixes and cold milk.
2. Let the pudding sit for 1-2 minutes until it begins to thicken but is still pourable.

Step 3: Fill the Cake

1. Pour the pudding over the cake, spreading it evenly so it seeps into the holes.
2. Gently tap the pan on the counter to help the pudding settle.
3. Cover and refrigerate for at least 2 hours.

Step 4: Make the Chocolate Ganache

1. Heat the heavy cream in a small saucepan over medium heat until it just begins to simmer.
2. Remove from heat and pour over the chocolate chips in a heat-safe bowl.
3. Let sit for 1-2 minutes, then stir until smooth.
4. Stir in corn syrup and vanilla extract.

Step 5: Finish the Cake

1. Once the cake is chilled and the pudding is set, pour the ganache over the top.
2. Use a spatula to spread it evenly.
3. Refrigerate for another 30 minutes, or until the ganache is firm.