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    Home » Desserts » Whoopie Pie Cake

    Whoopie Pie Cake

    Last updated on October 7, 2020. Originally posted on March 23, 2020 By Elaine 42 Comments

    321 shares
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    This whoopie pie cake recipe is a fun variation on those cute little pies! All that chocolatey goodness sandwiching a delicious frosting makes this a much sought after birthday cake in our family!

    Chocolate cake on the white beaded plate

    I adore whoopie pies, especially the way my mom made them. Always have and even today, I could eat one every day.

    And as I have little self control when it comes to these chocolatey babies, I felt like doing something different because one whoopie pie would become two and then three, etc.

    Realizing my dilemma, I figured – if it comes in a cake form, then I would eat one piece. Just ONE in a sitting. And if I made Christopher cut my portion and hide the whole darn thing away from my chocolate laser beam eyes, then I’d be golden. I can be satisfied with one piece, as long as it isn’t skimpy. Feeling me? Ah-huh. I knew you would.

    The dense fudginess of the chocolate engulfing the sweet frosting makes this cake a favorite. One of the things I love is that you don’t need the whole cake to be covered in frosting because it’s so delicious and satisfying.

    I decided to make a marshmallow fluff butter cream frosting. This is a variation on my mom’s recipe but I really like it.

    This post may contain affiliate links, which means I get a small commission, at no additional cost to you, if you click the link and buy something. You can read my disclosure here.

    Helpful tips

    • Once you’ve whisked together the cocoa powder and water, the longer it sits, the thicker it gets.
    • You need to take the butter out at least 30 minutes before starting the recipe. I like to take it out one hour before and in the winter months, I actually take it out the night before.
    • To quicken the softening of the butter: unwrap it, place it in the mixer and cut it into pats with a knife.
    • To keep your hand clean when you grease the cake pans, put a sandwich baggie over your hand, scoop out some vegetable shortening and spread it thickly around the pan. Then peel off the sandwich baggie and you have a clean hand.
    • How to sour milk – Add 2 cups of milk to a small bowl and whisk in 2 tablespoons vinegar, let sit for 5 minutes.
    • You will have extra frosting but don’t worry because it freezes well – put in an airtight container and use within 3 months.

    How to make a whoopie pie cake

    Pre-step

    Take butter out at least 30 minutes before starting the recipe.

    Step one

    Get your stand mixer and two greased 9 inch cake pans.

    Preheat the oven to 350 degrees Fahrenheit.

    Step two

    In a mixing bowl, add cocoa powder and water and whisk until combined, then set aside. (A)

    Step three

    Place butter and sugar in the mixer. (B) Mix until combined.

    Cocoa and water mixed on the left and butter and sugar in a mixing bowl on the right

    Step four

    Get the eggs, and soured milk (see how to do that in helpful tips above). (C)

    Step five

    Add them to the mixer. (D)

    eggs, milk and vinegar on the left and soured milk in the mixer with the butter and sugar on the right

    Step six

    Gather flour, baking powder, baking soda and salt. (E)

    Step seven

    Add dry ingredients and the chocolate/water mixture to the mixer. (F)

    Flour on the left and dry ingredients in the mixer on the right

    Step eight

    Turn the mixer on and mix until incorporated. Divide the batter between the two greased pans. (G)

    Step nine

    Bake for 25 minutes. Test with a cake tester to make sure they are done. The tester should come out clean. If it doesn’t, bake for another 2 minutes and test again.

    Place pans on a wire rack to cool for 10 minutes. (H)

    Batter in the pan on the left and on the right the cake cooked in the cake pans

    Step ten

    Remove cake from the pans to the wire rack and let the cake cool completely before frosting.

    Step eleven

    Once the cake has cooled, gather the ingredients for the frosting – softened butter, marshmallow fluff and confectioner’s sugar. (I)

    Step twelve

    Place in the mixer and mix together until combined. (J)

    Ingredients for the fluff frosting on the left and the mixed frosting on the right

    Step thirteen

    One big difference between a whoopie pie cake and individual whoopie pies is that the chocolate halves of a cake can’t be round or the cake would just flatten on a cake dish.

    To make it easier to frost, I cut the domes off the two cake rounds and throw the domes away, (or eat them, hardy-har-har).

    Put the first cake round on the cake dish, dome cut side facing up. Dollop a good amount of frosting on top. (K)

    Step fourteen

    Spread the frosting around. (L) Put as much or as little as you want. You will have some frosting left over.

    A pile of frosting on the cake round on the left and spread out on the right

    Step fifteen

    Place the other cake round dome-side down on top of the frosting. Take some of the leftover frosting and fill in the gap between the rounds.

    Vertical view of the chocolate cake with a big layer of frosting on a glass pedestal

    Time to cut the cake.

    Piece of chocolate cake on the cake server held above the cake

    And take a delicious bite.

    Overhead view of a white plate with a layered chocolate cake. There is a fork with a piece of cake on it

    I hope you enjoyed this whoopie pie cake recipe. It’s super delicious.

    Other fun delicious cakes

    • Nutella coffee cake
    • NE apple cider cake
    • Rum cake

    And as always, may all your dishes be delish.

    If you’ve tried this recipe, I’d love the know what you thought about it in the comments below. I love hearing from you! You can also FOLLOW ME on FACEBOOK, TWITTER, INSTAGRAM and PINTEREST to see more of my delicious food and delightful cocktails!

    Piece of whoopie pie cake on the cake server - square

    Whoopie Pie Cake

    Why just have whoopie pies when you can have whoopie pie cake! Deliciously moist and chocolatey.
    5 from 19 votes
    Print Pin Rate
    Course: Dessert
    Cuisine: Dessert
    Keyword: chocolate cake, whoopie pie cake
    Prep Time: 15 minutes
    Cook Time: 25 minutes
    Total Time: 35 minutes
    Servings: 12 slices
    Calories: 425kcal
    Author: Elaine Benoit

    Ingredients

    Cake

    • ½ cup cocoa powder
    • ½ cup hot water
    • 1 ½ cup sugar
    • ½ cup butter
    • 2 eggs
    • 2 cups milk soured with 2 tablespoons vinegar
    • 2 ¾ cups flour
    • 1 teaspoon baking soda
    • 1 teaspoon baking powder
    • ½ teaspoon salt

    Frosting

    • 1 cup butter
    • 2 cups marshmallow fluff
    • 3 cups confectioner's sugar

    Instructions

    Cake

    • Take out butter at least a half hour before starting the recipe
    • Preheat oven 350 degrees F and liberally grease two 9 inch cake rounds
    • In a small bowl combine cocoa and hot water, set aside
    • In stand mixer, cream softened butter and sugar together until creamy
    • Add eggs, sour milk and mix together, it will be a little watery
    • Add flour, cocoa mixture, baking soda, baking powder and salt, mix until incorporated
    • Pour batter into prepared cake round pans and bake for 25 minutes
    • Cool for 10 minutes before removing from pans and placing them on wire racks to cool fully

    Frosting

    • In the mixer, add softened butter, marshmallow fluff and confectioner's sugar. Turn the mixer on low and gradually increase the speed until the frosting is totally mixed
    • Cut the domes off the cakes for easier frosting and either throw them away or set aside to eat later
    • Place one of the rounds, dome side up on the cake base and dollop a healthy amount of the frosting on the cake. Use a knife to spread the frosting over the cake round
    • Place the other round dome side down on top of frosted one and add more frosting around the edges so it is level with the sides
    • Cut into slices
    • Plate
    • Eat
    • Enjoy

    Equipment

    stand mixer
    glass bowl
    whisk
    9" cake round pans
    See all my favorite tools and gift ideas at my Amazon Store page!Check out Elaine’s Amazon Store!

    Notes

    Helpful tips
    • Once you’ve whisked together the cocoa powder and water, the longer it sits, the thicker it gets.
    • You need to take the butter out at least 30 minutes before starting the recipe. I like to take it out one hour before and in the winter months, I actually take it out the night before.
    • To quicken the softening of the butter: unwrap it, place it in the mixer and cut it into pats with a knife.
    • To keep your hand clean when you grease the cake pans, put a sandwich baggie over your hand, scoop out some vegetable shortening and spread it thickly around the pan. Then peel off the sandwich baggie and you have a clean hand.
    • How to sour milk – Add 2 cups of milk to a small bowl and whisk in 2 tablespoons vinegar, let sit for 5 minutes.
    • You will have extra frosting but don’t worry because it freezes well – put in an airtight container and use within 3 months.

    Nutrition

    Serving: 1slice | Calories: 425kcal | Carbohydrates: 101g | Protein: 6g | Fat: 25g | Saturated Fat: 15g | Cholesterol: 89mg | Sodium: 421mg | Potassium: 197mg | Fiber: 2g | Sugar: 72g | Vitamin A: 832IU | Calcium: 84mg | Iron: 2mg
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    321 shares

    This post may contain affiliate links, which means I get a small commission, at no additional cost to you,  if you click the link and buy. You can read my disclosure here.

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    Reader Interactions

    Comments

    1. Scott

      March 01, 2016 at 4:04 pm

      This makes me wish I wasn’t gluten free…. Looks so good!

      Reply
      • Elaine

        March 01, 2016 at 4:26 pm

        Thank you Scott,

        Hmmmm. Wheels are turning.

        Elaine

        Reply
    2. Andrea Wyckoff

      March 03, 2016 at 11:13 pm

      Wow! Yes Please! Who can pass up a slice of this beautiful whoopie pie cake!

      Reply
      • Elaine

        March 04, 2016 at 7:43 am

        Not me! That’s for sure. 🙂

        Elaine

        Reply
    3. Joyce

      March 23, 2018 at 3:36 pm

      Now, this looks interesting and I can’t wait to make it!

      Reply
      • Elaine

        March 23, 2020 at 1:42 pm

        Thanks Joyce. I hope you enjoy it!

        Reply
    4. Gloria

      March 23, 2020 at 1:32 pm

      With so many of us not being able to leave our homes (except to get food)…we all need some delicious recipes to make. They have to be easy too. This is perfect.

      Reply
      • Elaine

        March 23, 2020 at 1:42 pm

        Thanks so much Gloria! Easy and delicious is essential!

        Reply
    5. Colleen

      March 23, 2020 at 2:15 pm

      We all need treats right now, and this is perfect. I just need to get some marshmallow fluff, and then I can make this yummy cake!

      Reply
      • Elaine

        March 24, 2020 at 9:57 am

        I went to the store the other day to get more fluff (I’m addicted to the stuff) and they were all out! 🙁 Hope you can find some, Colleen! Thanks for your comment.

        Reply
    6. Kushigalu

      March 23, 2020 at 8:41 pm

      These pie looks so delicious and great recipe. I will try this soon!

      Reply
      • Elaine

        March 24, 2020 at 9:57 am

        Thanks Kushigalu! I hope you enjoy it when you do!

        Reply
    7. Taylor Kiser

      March 23, 2020 at 9:26 pm

      I need this cake in my life! Looks out of this world delicious!

      Reply
      • Elaine

        March 24, 2020 at 9:56 am

        Thank you Taylor! I appreciate it!

        Reply
    8. Vicky

      March 23, 2020 at 9:34 pm

      All the yummy, chocolate flavor of a whoopie pie in a cake?!?!? Yes, please!!!

      Reply
      • Elaine

        March 24, 2020 at 9:56 am

        It’s one of my favorite cakes. I have to spread out the time between baking it since hubby raises his eyebrow at me. Thanks for the comment Vicky!

        Reply
    9. Anita

      March 23, 2020 at 11:19 pm

      I love whoopie pies, and this giant cake version is such a marvelous beauty to behold.

      Reply
      • Elaine

        March 24, 2020 at 9:55 am

        Hehe. Thanks Anita! 🙂

        Reply
    10. Laura | Wandercooks

      March 24, 2020 at 12:14 am

      This cake looks just divine!! I have no doubt it will be a hit with the fam!

      Reply
      • Elaine

        March 24, 2020 at 9:55 am

        I bet it will too Laura! Thanks for the comment!

        Reply
    11. cyndy

      March 24, 2020 at 12:52 am

      Wow – this looks soooo good! I love whoopie pies too and this is a good solution to keep from eating two -or three – or four .LOL

      Reply
      • Elaine

        March 24, 2020 at 9:55 am

        Hehe. It actually works! Thanks Cyndy!

        Reply
    12. Anna

      March 24, 2020 at 11:23 am

      I wish there was an option just to reach out and grab this whole pie of my screen! That texture looks perfect, and I love that you’ve used marshmallow fluff in there! Perfect treat for the whole family (although, I would probably eat it all by myself) 🙂

      Reply
      • Elaine

        March 24, 2020 at 12:46 pm

        Hehe. Thanks Anna! I have to usually give half the cake away because I KNOW I’ll eat it all myself. Thank you for your comment.

        Reply
    13. Denise

      March 25, 2020 at 5:03 pm

      What a fun cake! Looks easy and delicious, perfect for any type of occasion. Thanks for sharing the recipe!

      Reply
      • Elaine

        March 26, 2020 at 9:58 am

        You’re welcome, Denise! Thanks for your comment!

        Reply
    14. Amy Liu Dong

      March 26, 2020 at 3:33 am

      This recipe deserves to have 5 star ratings, it’s delicious and such a perfect desserts to prepare for our lunch today.

      Reply
      • Elaine

        March 26, 2020 at 9:58 am

        Thanks Amy! I’m so glad you enjoyed it!

        Reply
    15. Analida Braeger

      March 26, 2020 at 9:00 pm

      I had all the stuff to make this while sheltering in place and it was amazing! Thanks so much!

      Reply
      • Elaine

        March 30, 2020 at 9:29 am

        Thank you Analida! This is one of my go-to cakes! I’m pleased that you enjoyed it!

        Reply
    16. Veronika

      March 27, 2020 at 4:06 pm

      I was just thinking about this cake this week. My mouth is watering when look at your photos. Will bake it this weekend!

      Reply
      • Elaine

        March 30, 2020 at 9:29 am

        Wonderful, Veronika! You’ll have to let me know how it came out.

        Reply
    17. Kari | Chef and Steward

      March 28, 2020 at 9:44 am

      Can I just eat the whole darn cake? Great idea for those of us who do not own whoopee pie pans.

      Reply
      • Elaine

        March 30, 2020 at 9:31 am

        Hehe. I have to wait for when I have guests to make this cake because I will eat the whole thing myself. 🙂 Thanks Kari!

        Reply
    18. Sharon

      March 28, 2020 at 1:04 pm

      Those pies were a favorite of mine growing up. Making this cake took me back and my family loved it so much!

      Reply
      • Elaine

        March 30, 2020 at 9:34 am

        I’m so happy to hear that Sharon! Thank yo so much!

        Reply
    19. Lori | The Kitchen Whisperer

      March 28, 2020 at 5:30 pm

      Oh my sweet heavens this looks amazing! I was just looking for a different cake to make and voila! There you are 🙂 I can’t wait to make this!!!

      Reply
      • Elaine

        March 30, 2020 at 9:34 am

        Hehe. Thanks Lori! I hope you enjoy it when you make it!

        Reply
    20. Cathleen

      March 29, 2020 at 12:38 pm

      I JUST ran out of cocoa powder, but I am DEFINITELY going to make this soon. Bookmarked for later, thanks for the amazing recipe 🙂

      Reply
      • Elaine

        March 30, 2020 at 9:34 am

        You’re welcome Cathleen! I hope you enjoy it when you make it. It’s a keeper for sure.

        Reply
    21. Gabby

      May 03, 2020 at 10:44 pm

      My family and I love this cake! It is so delicious. I am going to make it for a family member’s birthday, and I will need to transport it in the car. Would you recommend putting it in a cooler, or is a cake container alright? I will make the cake the day before. The car ride is about four hours. Thank you so much for your awesome recipe!

      Reply
      • Elaine

        May 04, 2020 at 10:12 am

        Gabby, I’m so glad to hear you love the cake. I think it’s fine in a cake container. I’ve transported it that way. The only time I have ‘worried’ is if it is super hot in the car – or the cake was in the sun. But other than that, it travels really well.

        Reply

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    Hi, I'm Elaine! I'm so glad you stopped by. Here you will find lots of tasty cocktails, comforting food and inspiration for your next meal. I LOVE chocolate, almost all foods, blogging, photography and spending time with my hubby!

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