Step 1

Preheat the oven to 350°Fahrenheit (175°Celsius). Grease and flour a 9x13-inch baking pan.

Step 2

In a large bowl, add cake mix, eggs, water, oil, and vanilla extract. Mix until smooth. Stir in the mashed bananas.

Step 3

Pour batter into the prepared pan and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

Step 4

Poke holes in the cooled cake using a fork or the handle of a spoon. Let the cake cool completely.

Step 5

While the cake cools, prepare the pudding. In a medium bowl, whisk together the pudding mix and milk until thickened, about 2 minutes.

Step 6

Pour the pudding evenly over the cake, pushing some into the holes. Refrigerate for at least 30 minutes, or until the pudding is set.

Step 7

Whip the heavy cream, powdered sugar, and vanilla extract until stiff peaks form.

Step 8

Arrange the banana slices over the pudding. Top with whipped cream and crushed vanilla wafers. Refrigerate until ready to serve. Enjoy!