Pudding Poke Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease a 9×13-inch baking dish with cooking spray.

Step 2
Beat cake mix, water, eggs, and oil in a large bowl with an electric mixer at low speed until moistened, about 30 seconds. Beat at medium speed for 2 minutes. Pour batter into the prepared baking dish.

Step 3
Bake in the preheated oven until a toothpick inserted into the center of cake comes out clean, 21 to 25 minutes. Poke holes immediately into warm cake with the round handle of a wooden spoon. Holes should be at 1 inch intervals and extend down to the bottom of the baking dish.

Step 4
Combine pudding mix with confectioners' sugar in a separate large bowl and gradually stir in milk. Beat with an electric mixer at low speed for 1 minute; do not overbeat. Pour 1/2 of the pudding mixture immediately over warm cake and into holes.

Step 5
Let remaining pudding thicken slightly at room temperature, then spoon over the top and spread to cover. Chill in the refrigerator for at least 1 hour before serving. Store leftovers in the refrigerator.