01 -
Preheat oven according to yellow cake mix instructions. Prepare batter as directed and pour into a greased 9x13-inch baking pan.
02 -
Bake the cake per package instructions until a toothpick inserted in the center comes out clean. Remove from the oven and cool for 15 minutes.
03 -
With the handle of a wooden spoon, poke holes evenly over the entire surface of the warm cake.
04 -
In a medium mixing bowl, whisk instant vanilla pudding mix with cold milk until thickened and smooth.
05 -
Pour the prepared pudding over the cake, allowing it to seep into the holes. Gently smooth the top with a spatula to ensure even coverage.
06 -
Refrigerate the cake for at least 1 hour to allow the pudding to set.
07 -
Combine chocolate chips and heavy cream in a microwave-safe bowl. Microwave in 30-second intervals, stirring after each, until the mixture is melted and smooth.
08 -
Pour the chocolate ganache over the chilled cake, smoothing it evenly across the surface with a spatula.
09 -
Place the cake in the refrigerator for an additional 30 minutes, or until the ganache is set. Slice and serve.