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?
MY OTHER RECIPESSo 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.
Annnnnyway.
Whoopie Pie Cake.
Simple. Delicious. Make it.
Just start with a chocolate cake mix.
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.)
When the cakes are done, allow them to cool completely.
Meanwhile mix up your filling. I’m talking butter, powdered sugar and Marshmallow Fluff…
When the cakes are cooled, plop that filling on the top of one of the cakes…
Spread it out evenly, and place the other cake on top.
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.
Cool the ganache slightly and pour that over the top of the cake…
Spread it to just about the edges of the cake and allow it to drip over the sides for dah-rama.
Let it set up a little bit and that’s it y’all.
Dunzo.
Print
PinDescription
serves approx 12-15
Ingredients
Cake
- 1 box Chocolate cake mix (prepared per package directions) + 1 extra egg
- *cocoa powder for dusting the pan
Filling
- 1 cup butter, room temperature
- 2 cups Marshmallow Fluff
- 3 cups powdered sugar
Ganache
- 1/2 cup heavy cream
- 1 cup semisweet chocolate chips
Instructions
Cake
- Preheat oven to 350°
- Grease 2 9×13 sized pans with butter and dust with cocoa powder, set aside.
- Prepare cake according to package directions, but add in an extra egg to the mix.
- Split the batter evenly between the 2 pans and bake for 15-20 minutes until a toothpick comes out clean.
- Allow cakes to cool completely.
Filling
- In stand mixer beat butter and Fluff together until smooth.
- Turn mixer to low and slowly add in powdered sugar. Turning mixer back up, continue mixing for 30-60 seconds until smooth.
- Spread the filling on top of one of the cakes. Top the filling with the other cake.
Ganache
- 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.
Notes
you could also bake this in 2 9×9 round pans
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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!
Great idea for a crowd!
The marshmallow filling looks dangerous! I fear that I might eat it all before putting it on the cake!!
Yum! I could eat the filling by the spoonful!
This looks amazing!!! I absolutely love whoopie pies, and think the idea of turning it into a cake is brilliant:)
Say whhaatt? I want this cake so bad. It’s nuts.
Oh wow! … I hope my hips will forgive me.
Love this! Also ‘dah-rama’ might be the best word ever.
Making this to celebrate the end of budget season @work!!!
YOUZA! I think I have died and gone to heaven…Yup, heaven! I will make this cake- the boozy version, of course!!
Wow that looks great! I like that you “added a little fancy” into a simple cake mix!
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!
So fun! This looks awesome!
I am definitely going to try this, my kids will flip!!
Yum! Looks delish!
P.S. I am envious of your hot pink mixer!
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.
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.
That looks sooooooo good!
Can’t wait to give it a try. This looks so yummy!! Thanks for sharing.
Yeah that filling sounds pretty dang fab!
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!
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.
This looks delicious!! Do you use a cake mix with or without pudding in it?
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!
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
Accident or not, this has my name all over it.
This looks so amazing! I’m literally drooling on the screen.
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!
Love it! Reminds me of my Ho-Ho Cake, which I made three times during the month of December 😉
Dayum… that looks sooo good.
Oh baby.
Favolous!
It seems so exquisite!! I repeat myself: favolous!
Mmmm yes PLEASE. Ganache is definitely not optional in this house.
‘Scuse me while I pick my jaw up and off the floor. AMAZING!
Oh yum-o! This looks so good! And so much easier than making individual pies.
KK
Look at that. I don’t know which layer I love MORE…
ooohmmmygosh! really outrageous!
WOW! OMG! I WANT THIS!
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!
Awesome!
You’re a genius, Shelly! Love it!
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!
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!!!!!
Hi Shelly!! Great seeing you last weekend. This cake…..whoa! Delish 🙂
This looks amazing! I will try this recipe next!!
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!
That’s odd…if it’s too funny just add more powdered sugar! Maybe your butter was too soft? Just a guess.
This is absolutely stunning and GENIUS! Can’t wait to make it!
Just made this tonight for the second time. It’s been a huge hit with my family! Thanks so much for the awesome recipe 🙂
Hello why kind of chocolate cake mix do u use? Milk or devils food?
Is marshmallow fluff the same as marshmallow creme?
Yep 🙂
I make Whoopie Pies all the time and I love this idea quicker and eaiser. One day I was making them and the Peanut Butter was yelling at me to mix in the filling….I used half fluff and half peanut butter and WOW it is amazing. thanks for the cake idea.
l love everything is easy to do ,and simple keep up the good work thanks from malta
OMG I fainted while reading this recipe I too am a buttercream frosting addict … WOW
why is the last pics cakes thicker than the pic on top did you double the recipe or is it the same?
Not sure what you mean… it’s probably just the angle. it’s the same cake in all the photographs.
This looks amazing! I am making it for Mother’s Day for myself…and all the family. Does it need to be refrigerated after it’s made? Thanks for sharing!
I never refrigerate the cake, but if you did, it would be fine!
I just finished swirling on the ganache. This cake will be a knockout at the 4th of July BBQ tomorrow! I used an 11″ X 14″ X 1″ deep cake pan to make the layers with parchment paper on the bottom. I followed the same cake recipe and baked it for 15-18 minutes. I wish I doubled the filling. The cake layers at this size have a bigger area. The current filling was plenty to cover it; I personally like more filling. Can’t wait to have a piece of this!
Just thought I would let you know I got here by following a link fir egg free recipes, & this was not. Both my girls are allergic to eggs so I was excited to see this recipe noted as “not an egg in site”. Not only do boxed cake mixes call for eggs, but marshmallow fluff also contains egg as well. Looks great & yummy, but very disappointed, & just thought I would let you know in case others had allergies as well.
What site referred you? For the most part I don’t really know when sites link to me. Sorry about the confusion on their part, but this cake definitely has eggs in it.
This looks so yummy!! I can’t wait to try it!!
This is the most delicious thing I have ever eaten, and is constantly being requested for family get-togethers!
Marshmallow Fluff is made from Egg Whites – so this is not an egg free recipe. Many people with an egg allergy are allergic to the white!
You’re right.. I do not claim that this is egg free in any way!
hi Shelley, this looks very interesting. Do you have a receip for marshmallow fluff from scratch? Thanks
Yep!! Here’s the recipe…just omit the extra spices I threw in! http://cookiesandcups.com/homemade-gingerbread-marshmallow-fluff/
Just a little FYI .. traditionally whoopie pies are not topped with ganache !! Born and raised in the state of Maine .. just sayin
oh, if only there was a dairy free version…..:(
I am going to try this gluten free. It looks delish!
To Dani above me…. I have made the fluff without butter. Use Spectrum palm shortening. Use dairy free chocolate chips and the extra creamy thick part of a can of coconut milk in place of heavy cream or actually, you can use any non-dairy milk for the ganache.
Bobbi, are you going to use a GF cake mix and still add the extra egg? Am curious to know how it comes out as I’d like to do the same! thx
just wanted to let you know I made this with a better batter Gluten Free cake mix and it came out awesome. a little too much filling, but who can really have too much frosting? the ganache put it over the top – perfect for super bowl sunday!! thank you 🙂
★★★★★
You, my friend, are a GODDESS!!
I made this for the superbowl, it was only the 4 of us so I took some into work, now I have requests for it. I am making one today for an Eagle Scout work day but with fudge marble cake.
Just made it. I can’t wait for dessert so I can dig in!!
I want to make this cake this weekend and wanted to know if you can freeze any leftovers. There is just the two of us and my husband doesn’t eat a lot of sweets he usually only takes a taste and that’s it.
sure!!
Ummmm… Yeah…. So, I need this, now! This looks ooey, gooey, delicious!
Made this today. The best cake I have ever tasted!! YUM!!
★★★★★
Awesome!! So glad you liked it!!
Is there any way u can send me tha direction to make that please
The recipe is provided at the bottom of the post.
is marshmallow fluff just heated marshmallows never heard of it sorry
Carolyn,
Marshmallow fluff is also called marshmallow creme in some places. It is a marshmallow flavored creamy stuff usually found in the baking section.
is there a reason to bake two separate cakes? Could you bake one 9×13 and slice it in half? I realize it might be a little crumby that way, but any other reason? Thanks!!
sure, you could do it that way!
i got half and half instead of heavy cream, what can I do to to substitute, I do not want to go to store. Cake in the oven
half and half will be fine in the ganache!
Carolyn,
Marshmallow fluff is also called marshmallow creme in some places. It is a marshmallow flavored creamy stuff usually found in the baking section.
★★★★★
Looks delicious & easy. Perfect combination. I’m so making this. Thank you.
This looks amazing!! Can’t wait to make it this weekend. One question, would the filling still work if I only use 1/2 cup butter? Don’t get me wrong, it would be heavenly for sure…but I’m not sure my heart can handle that much butter!! Ha ha!!
ha! yes, you could definitely try it, I am sure it will be fine. The texture will be a little different, though!
Please email anything that good.looks easy peasy.
Was wondering if you can use and hand beater.
sure!
I don’t know how to bake and no one else in my household does, so I will just sit in the corner and cry. Don’t pay any attention to me. Thanks for the pictures and all of the posts. That cake, a gallon of vanilla ice cream and hot, black coffee would be the perfect day before death for me. Thanks.
We have a 14 year old border collie and wanted to celebrate her birthday. My niece suggested we choose a dessert that was black and white to go along with our Julie Dog- your whoppie cake was perfect! It was easy and delicious! The whole family loved it! Thanks so much!
http://www.thekusilife.com
★★★★★
Oh how fun!!
My wasitline expanded as I was making this cake. But darn it is sooooo good.
★★★★
This cake is listed as egg free, then tells you to add an extra egg beyond what’s called for on the box of cake mix. Very disappointing……
Where is it marked as egg free? I would have never advertised it as such, since it does include eggs.
This looks great! Any tips to get the cake out of the pan neatly? It looks like you flipped them upside down? Thanks!!
Make sure to grease the pan completely and yes, I just flipped it out!
I made this cake for my family dinner and they just loved it. It really does taste like a Hostess cupcake, only better. It is delicious and rich tasting. Now they are asking me to make it again. Thanks for the recipe.
The only problem is I don’t have a plate long enough for a sheet cake~what do you recommend ?
A cutting board maybe?
Can I use my own chocolate cake or chocolate brownie recipe?
Oh yes, of course! Using a brownie, though, might be too dense, and when you slice it the filling might squeeze out 🙂
This recipe and picture made by mouth water by just looking and reading the recipe. It has to be delicious. There is a recipe called: Death by Chocolate. I think this could be the alternate name for this recipe. Thank you from this Chocoholic.
you said this cake does not have eggs, but the recipe does call for one egg. Is there a way to make it without the egg?
Hi, I don’t believe I ever stated this cake is egg free. It isn’t, there is actually 4 eggs in the recipe… 3 that are required by the box cake directions PLUS one extra egg.
This was DELICIOUS.I made the year-round cake. Glad I made it for someone else’s birthday and that it didn’t come home with me!
Fluff is made with eggs
★★★★★
I make this every year for my birthday!!
I brought this to our Bible study group and it was a HUGE hit. Everyone raved about it! I added about 3/4 c mini chocolate chips to the cake batter, and I added some extra powdered sugar to the filling. I thought the filling tasted too much like butter before I added the extra powdered sugar. In hindsight, I wonder if a little vanilla might have been good in the filling. When it was all put together, the taste was amazing!
★★★★★
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