A Banana Pudding Cake-Mix Cake on a cake plate.

Banana Pudding Cake-Mix Cake

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Are you ready for this extra special Banana Pudding Cake-Mix Cake? It tastes just like banana pudding! There’s a topping of fluffy marshmallow cream-like frosting that’s a sweet surprise, and with a few additions, we’re getting better results from a regular cake mix. Let me show you how!

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How To Make A Boxed Cake-Mix Better

There’s nothing like the convenience of a store bought mix. It’s economical, stores well, and (if made right) always has a dependable outcome. But did you know that with a few extra ingredients, you can regenerate a cake-mix cake into one that tastes like it’s from the bakery, or even better?

That’s right! It becomes a much fluffier, moister, and higher-rising cake by mixing those pre-packaged ingredients with an extra egg, a small box of instant pudding, and some mayonnaise.

Yep, mayonnaise! It’s the oil that makes it so moist and tender. If you’d like to make your own homemade mayonnaise, check out this recipe. It’s fresh and delicious with a Cajun kick!

Ingredients of mayonnaise, water, eggs, and a bowl of cake mix.

This time, we’re using a banana cream instant pudding mix for our Banana Pudding Cake. For any other cake mix flavor like chocolate or strawberry, use vanilla flavored pudding instead.

I hope you try these ingredients with your next cake. It’s so easy to remember. This is how I memorized the ingredients; start with 1 cake mix and 1 instant vanilla pudding, and then I remember the rest of the elements with a 1,2,3:

1 cup of water,

2/3 cup mayonnaise, and

3 eggs

Somehow this helps my brain recall the ingredient amounts easily. Maybe it’ll help you, too!

More Banana Flavor

Next, we top the baked layer with a filling of mashed bananas and sugar. Nothing more! The idea came from a friend who was raised in Roberts Cove, a German community near Crowley, Louisiana. She recently shared with me her favorite cake her mama used to bake. It had many thin cake layers with this banana filling in between each one. Then it was covered with a box of Betty Crocker Home Style Fluffy White Frosting Mix that tastes like marshmallow cream. Sounds yummy, doesn’t it?

I love hearing and sharing about the foods we Cajuns grew up eating in the different regions of Louisiana. (Thanks, Rose!)

Filling spread with a spatula on a rectangle cake.

This recipe came about by accident. One day, I was making a cake-mix cake and realized I only had banana cream instant pudding instead of plain vanilla. I thought of Rose’s mama’s cake and decided to add the banana filling and the fluffy white frosting. To my surprise, the cake tasted just like banana pudding. Horray!

Mashed bananas in a bowl with a fork, a bowl of crushed vanilla wafers and a tablespoon of sugar.

More About The Frosting

This frosting is divine! It tastes like white clouds of marshmallow cream. The only thing needed is a box of Betty Crocker Home Style Fluffy White Frosting Mix beaten with 1/2 cup of boiling water. It whips in minutes and is soo fun to spread around.

Delicious and a-m-a-z-i-n-g!

A spatula spreading frosting on Banana Pudding Cake Mix Cake.

Oh, what a cake!

It’s got the hallmark of a good banana pudding. There’s the taste of banana in the super-moist, mouth-watering cake, and in the creamy filling. Plus, the frosting is the icing on the cake! And to give it more of that banana pudding smack, it’s topped with crushed vanilla wafers and refrigerated until it’s good and cold.

A piece of Banana Pudding Cake Mix Cake.

See how fluffy and scrumptious it is?

More Cake-Mix Recipes You Might Like:

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A Banana Pudding Cake-Mix Cake on a cake plate.

Banana Pudding Cake

This easy Banana Pudding Cake-Mix Cake with marshmallow cream frosting tastes like banana pudding. With a few extra ingredients added to the mix, you get bakery-style results.

  • Total Time: 1 hour 20 minutes
  • Yield: 15 servings 1x




  • 1  15.25-ounce box yellow cake mix
  • 1  3.4-ounce box banana cream instant pudding mix
  • 1 cup water
  • 2/3 cup mayonnaise
  • 3 whole eggs


  • 3 bananas
  • 1 tablespoon granulated sugar


  • 1 box Betty Crocker Home Style Fluffy White Frosting Mix
  • 1/2 cup boiling water


  • 1 cup crushed vanilla wafers



  1. Preheat oven to 350°, prepare a 9×13 cake pan with spray oil and flour.
  2. Combine the cake mix, pudding mix, mayonnaise, and water into a large bowl; mix together, adding 1 egg at a time.
  3. Beat for 2 minutes.
  4. Pour batter into the cake pan and bake for 30 minutes or until a toothpick inserted into the middle of the cake comes out clean.
  5. Allow cake to thoroughly cool before spreading on the filling and frosting.


  1. Peel bananas and mash them with a fork in a medium-sized bowl.
  2. Mix in sugar.
  3. Spread filling over cooled cake.


  1. Empty the mix into a large bowl, pour boiling water into the bowl and mix on high to get stiff peaks formed; that will take 5-7 minutes while scraping the bowl every couple of minutes.
  2. Spread frosting over the filling, covering the cake completely.


Sprinkle cake with crushed vanilla wafers and refrigerate for at least 2 hours.


  • Store cake covered in the refrigerator.
  • Slice the cake in half to make a two-layer cake, spread filling on one half, and top with the other layer before frosting.
  • The ingredients of mayonnaise and vanilla pudding enhance the cake’s texture and moistness.
  • Use this cake mix recipe with other cake mix flavors substituting instant vanilla pudding for the banana cream pudding.
  • Author: Louisiana Woman
  • Prep Time: 50 minutes
  • Cook Time: 30 minutes
  • Category: Sweets
  • Method: Baking
  • Cuisine: American

Keywords: banana pudding cake, cake mix cake, instant pudding cake

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“There are no secrets to success, it is the result of preparation, hard work, and learning from failure.”

Colin Powell

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