Whoopie Pie Cake


This Easy Whoopie Pie Cake is an instant favorite..filled with delicious Marshmallow Buttercream!

Sometimes simple is better.

Actually most times, yes?


So this post is gonna be simple.


This Whoopie Pie Cake was sort of accidental.  Obviously not accidental in intention, but accidental in execution.

See, I was going to make this a super fancy, stack-o-whoopie pies piled up to make a giant gorgeous deconstructed type cake.


Unfortunately, ain’t nobody got time for that.

Meaning me.  I ain’t got time for that.


So I took the easy route.

It might not be as visually appealing as a giant stack of whoopie pies…I mean not much would…but it is incredibly tasty.

And also, you can actually slice it without holding your breath.

Which is kind of important, because I can only hold my breath for like 7 seconds before I’m certain I will faint.



Whoopie Pie Cake.

Simple. Delicious. Make it.

Whoopie Pie Cake | Cookies and Cups Just start with a chocolate cake mix.
 photo IMG_9469_zpse813d347.jpg Listen to the directions, then add an extra egg.
Grease 2, 9×13 pans with butter and dust with cocoa powder.

Split the batter evenly between the 2 pans.
(Obviously if you don’t have 2 pans, just bake one at a time.)
 photo PicMonkeyCollage_zps25ef02d4.jpg When the cakes are done, allow them to cool completely.
 photo IMG_9485_zps15f6410b.jpg Meanwhile mix up your filling. I’m talking butter, powdered sugar and Marshmallow Fluff…
 photo IMG_9482_zps46addd2f.jpg When the cakes are cooled, plop that filling on the top of one of the cakes…
 photo IMG_9489_zps1af9d40c.jpg   Spread it out evenly, and place the other cake on top.
 photo IMG_9497_zpsb657447b.jpg Next make your chocolate ganache.
This is actually an optional step, but not really 😉

Just heat up some heavy cream to almost boiling and then add in your chocolate chips, stirring until smooth.
 photo IMG_9501_zpse407e526.jpg Cool the ganache slightly and pour that over the top of the cake…
 photo IMG_9505_zps14c463e8.jpg Spread it to just about the edges of the cake and allow it to drip over the sides for dah-rama.
 photo PicMonkeyCollage2_zps71f1bda2.jpg Let it set up a little bit and that’s it y’all.
Whoopie Pie Cake | Cookies and Cups


4.8 from 5 reviews
Whoopie Pie Cake
serves approx 12-15
  • 1 box Chocolate cake mix (prepared per package directions) + 1 extra egg
  • *cocoa powder for dusting the pan
  • 1 cup butter, room temperature
  • 2 cups Marshmallow Fluff
  • 3 cups powdered sugar
  • ½ cup heavy cream
  • 1 cup semisweet chocolate chips
  1. Preheat oven to 350°
  2. Grease 2 9x13 sized pans with butter and dust with cocoa powder, set aside.
  3. Prepare cake according to package directions, but add in an extra egg to the mix.
  4. Split the batter evenly between the 2 pans and bake for 15-20 minutes until a toothpick comes out clean.
  5. Allow cakes to cool completely.
  1. In stand mixer beat butter and Fluff together until smooth.
  2. Turn mixer to low and slowly add in powdered sugar. Turning mixer back up, continue mixing for 30-60 seconds until smooth.
  3. Spread the filling on top of one of the cakes. Top the filling with the other cake.
  1. In small saucepan bring the heavy cream to almost a boil. Remove from heat and stir in chocolate chips. Allow to cool for 10 minutes and then pour over top of cake.
you could also bake this in 2 9x9 round pans


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113 Comments on "Whoopie Pie Cake"

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April 25, 2013 12:52 pm

i love giant versions of other desserts. The only problem is that i convince my self, i am only eating half when i am eating half a batch!

April 25, 2013 12:57 pm

Great idea for a crowd!


The marshmallow filling looks dangerous! I fear that I might eat it all before putting it on the cake!!

April 25, 2013 1:04 pm

Yum! I could eat the filling by the spoonful!

Jeannine DiBart
April 25, 2013 1:06 pm

This looks amazing!!! I absolutely love whoopie pies, and think the idea of turning it into a cake is brilliant:)

April 25, 2013 1:10 pm

Say whhaatt? I want this cake so bad. It’s nuts.

April 25, 2013 1:23 pm

Oh wow! … I hope my hips will forgive me.

April 25, 2013 1:42 pm

Love this! Also ‘dah-rama’ might be the best word ever.

April 25, 2013 2:13 pm

Making this to celebrate the end of budget season @work!!!

April 25, 2013 2:27 pm

YOUZA! I think I have died and gone to heaven…Yup, heaven! I will make this cake- the boozy version, of course!!

April 25, 2013 2:43 pm

Wow that looks great! I like that you “added a little fancy” into a simple cake mix!

April 25, 2013 2:45 pm

Wow this looks so easy and amazing at the same! Love it!


I think this looks FABULOUS! Two of the best things ever, simple chocolate cake and a whoopie pie! My kids would love this because they are all about the icing!

April 25, 2013 2:55 pm

So fun! This looks awesome!

April 25, 2013 3:15 pm

I am definitely going to try this, my kids will flip!!

April 25, 2013 3:22 pm

Yum! Looks delish!

P.S. I am envious of your hot pink mixer!

Gayle Owen
April 25, 2013 3:25 pm

I work at a restaurant and always bring the staff treats on the weekends. Guess what they are getting this weekend. Think I’ll make in the round pans to look like a giant whoopie pie. Thanks for the idea.

Darlene Berry
January 21, 2015 7:25 pm

Gayle that is such a nice idea for your staff. You must have a wonderful staff & they really care a great deal for you. Hope your giant woopie turn out good. I have to try this recipe. It looks too yummy to pass up.

April 25, 2013 3:33 pm

That looks sooooooo good!

April 25, 2013 4:06 pm

Can’t wait to give it a try. This looks so yummy!! Thanks for sharing.

April 25, 2013 5:07 pm

Yeah that filling sounds pretty dang fab!

April 25, 2013 5:21 pm

MMMM whoopie pie cake! Sometimes when you don’t have time to make a fancy dessert, you end up liking your more simple version anyway!

April 25, 2013 6:26 pm

I’m having one of those days….no, scratch that. I’m having one of those WEEKS when a decadent whoopie pie cake like this could really make the sun shine a little brighter… Soooooo…wanna fly one across country for me? Pretty please? 😉 Seriously, this is just crazy awesome, Shelly.

April 25, 2013 7:59 pm

This looks delicious!! Do you use a cake mix with or without pudding in it?

April 25, 2013 9:00 pm

I do love me some crazy layer cakes…but sometimes I also just want two chocolate layers with some vanilla sandwiched in between. This cake is perfecto for that!

April 25, 2013 9:18 pm

Simple is always good and boy does this look awesome!! Perfect!

Dont you just wish there was more hours in the day!!?? Never enough time! NEVER!


Simple and easy is alway better! This cake looks fabulous! I could probably eat half of it! LOL

April 25, 2013 11:33 pm

Accident or not, this has my name all over it.

April 25, 2013 11:59 pm

This looks so amazing! I’m literally drooling on the screen.

April 26, 2013 8:08 am

So, I’ve been eating marshmallow fluff out of the jar. It’s a problem. I’ve got to stop. The civilized thing to do is make a cake and eat it!

April 26, 2013 12:18 pm

Love it! Reminds me of my Ho-Ho Cake, which I made three times during the month of December 😉

April 26, 2013 12:21 pm

Dayum… that looks sooo good.

April 26, 2013 1:51 pm

Oh baby.

April 26, 2013 3:25 pm


April 26, 2013 3:30 pm

It seems so exquisite!! I repeat myself: favolous!

April 26, 2013 4:20 pm

Mmmm yes PLEASE. Ganache is definitely not optional in this house.

April 26, 2013 4:53 pm

‘Scuse me while I pick my jaw up and off the floor. AMAZING!

May 1, 2013 1:41 am

Oh yum-o! This looks so good! And so much easier than making individual pies.


May 1, 2013 2:08 pm

Look at that. I don’t know which layer I love MORE…


[…] Oh! This is incredibly delicious! The experience of eating this kind of dessert is mind-boggling. You would never ever forget that experience! You would enjoy your first until your last bite. Sounds yummy, isn’t it? So this dessert could give you reason to bake every weekend.The full recipie can be found here […]

May 20, 2013 11:49 am

ooohmmmygosh! really outrageous!

May 20, 2013 8:58 pm


Laurie P
May 26, 2013 1:05 pm

this could be the best thing I ever ate — made it in two 9″ pans, for Memorial Day picnic, and it disappeared so fast it left a cloud of dust (crumbs?) Thanks for a great recipe, it’s a keeper!

May 27, 2013 11:38 pm

You’re a genius, Shelly! Love it!

June 5, 2013 11:30 pm

Your whoopie cake looks awesome! What cake mix brand did you use? I want to bake this cake this weekend, just want to make sure I buy the same cake mix you used. Thanks!

June 9, 2013 7:12 pm

I am making your whoopie pie cake tomorrow for my beau’s birthday and I have every bit of faith it will be fantastic!
He’s from Maine where whoopie pies are as necessary as breathing and when I found your recipe I jumped for joy.
Thanx so much!!!!!

June 12, 2013 7:48 am

Hi Shelly!! Great seeing you last weekend. This cake…..whoa! Delish :)


[…] Whoopie Pie Cake from Cookies and Cups Chocolate Buttermilk Donuts from Authentic Suburban Gourmet Chocolate Buttermilk Bundt Cake from The Sweet Art […]

July 17, 2013 11:53 pm

This looks amazing! I will try this recipe next!!

August 3, 2013 10:42 pm

Help! I so want this to be amazing, but I made it today and my “fluff” didn’t really fluff. Your picture looks white and fluffy and marshmallow-y. But mine came out sort of yellow (the butter) and too runny. What could I have done wrong and how do I fix it when I try again? Thanks!

August 5, 2013 12:13 pm

This is absolutely stunning and GENIUS! Can’t wait to make it!