S’mores Cake

This S’mores Cake is delicious! Chocolate Cake layers, filled with Marshmallow Frosting, and covered in Chocolate Fudge Frosting.

S'mores Cake

Every year, for the past 3 years, the following conversation happens around the beginning of August:

Me- Brian, what kind of cake do you want for your birthday?

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Brian- Strawberry Rhubarb pie.

Me- Guess I’m gonna have to come up with a cake flavor on my own.

And that’s how this S’mores Cake was born.

Yes, I am not being mean by not granting my husband his wishes of having pie. He just had some Strawberry Rhubarb pie. Well, they were actually Strawberry Rhubarb Galettes. But still.

Birthdays are meant for cakes! And cakes only!

I stand by this. So I always end up making him a cake.

And I know he loves S’mores, and he went crazy over the S’mores Cupcakes I made a while ago, so seemed like a great option, to make a S’mores Cake to celebrate this s’mores lover, and to celebrate the end of summer too.

S'mores Cake

I found this S’mores Cake to be a little rustic looking, and I just loved that about it. Granted, we could blame my lack of time, and how much I rushed to get this done in time, or how I completely messed up the frosting the first time and had to remake it. We could blame it on those things, but we are just going to blame it on the Rustic Summer Feel that comes with eating a s’more around the campfire.

And seriously, wouldn’t it be better to be eating this S’mores Cake around the campfire?

S'mores Cake

This is the tip I use to pipe the marshmallow frosting on top of the cake.

The Marshmallow Frosting was probably my favorite part of the S’mores Cake, of course, combined with everything else. But seriously, it’s one of my favorite frostings!

I’d say this cake is a total winner. And just like that I am done with Summer baking. Now we are moving on to Fall baking, which I’ve already started with this delicious Pecan Fig Cake.

Get ready to see a lot more soon!

S'mores Cake

I hope you like today’s S’mores Cake.

Have a great day, thanks for reading!

S'mores Cake

If you like this cake, please be sure to take a look at all of my Cake recipes here. Hint: Cashew Caramel Apple Cake and Marble Layer Cake are trending on the blog.

S'mores Cake

S’mores Cake

Camila Hurst
This S’mores Cake is delicious! Chocolate Cake layers, filled with Marshmallow Frosting, and covered in Chocolate Fudge Frosting.
5 from 6 votes
Prep Time 1 hour
Cook Time 25 minutes
Total Time 1 hour 25 minutes
Course Dessert
Cuisine American
Servings 10 people


Chocolate Cake
  • 1 1/2 cups all-purpose flour 183 grams, 6.4 oz
  • 1/2 cup unsweetened cocoa powder 62 grams, 2.1 oz
  • 1 1/2 teaspoon baking powder
  • 1 teaspoon baking soda
  • 3/4 teaspoon fine sea salt
  • 2 eggs
  • 1 1/3 cups sugar 266 grams, 9.3 oz
  • 1/4 cup canola oil 59 ml
  • 2/3 cup milk 157 ml
  • 2 teaspoons vanilla extract
  • 2/3 cup hot brewed coffee read notes 157 ml
Chocolate Fudge Frosting
  • 2/3 cup dark chocolate chopped 113 grams, 4 oz
  • 3 cups powdered sugar 382 grams, 13.5 oz
  • 2 tablespoons cocoa powder
  • 1 cup unsalted butter softened 226 grams, 8 oz
  • 1 teaspoon vanilla extract
  • 3-4 tablespoons milk
Marshmallow Frosting
  • 2 egg whites
  • 100 grams granulated sugar 1/2 cup, 3.5 oz.
  • 1/4 teaspoon cream of tartar
  • 1/8 teaspoon fine sea salt
  • 1 teaspoon vanilla extract
To assemble
  • 1 cup graham cracker crumbs 121 grams, 4.3 oz, about 8 crackers


Chocolate Cake
  • This recipe makes for 4-6” round cakes.
  • Pre-heat oven to 350F.
  • Butter 4-6″ cake pans and place a parchment paper circle in the bottom of pans. Butter parchment. Set aside.
  • Sift together flour, cocoa powder, baking powder, baking soda, salt, and espresso powder, if using it instead of coffee. Set aside.
  • Whisk eggs together in a large bowl for about 30 seconds.
  • Add sugar and keep whisking for about 1 minute, until brightened in color.
  • Add oil to the bowl. Whisk until combined.
  • Add milk and vanilla extract.
  • Pour dry ingredients over wet mixture.
  • Fold with a spatula slowly, until ingredients are just combined.
  • If you see big clumps of cocoa powder, you can use the whisk to try to smooth the batter out.
  • Once batter is incorporated, pour hot coffee in the bowl. Whisk until combined.
  • Batter will be thin and runny. It’s ok! Totally fine!
  • Pour evenly onto baking pans.
  • Bake in pre-heated oven for 10-20 min. After the 10 minute mark, keep checking regularly, because you don’t want to burn your cakes or overbake them. Remove them from the oven once a toothpick comes our clean once inserted in the cake.
  • Once you remove it from the oven, wait 10 minutes, flip cakes onto a cookie cooling rack and let cakes cool.
  • Once cool, wrap each layer individually in plastic wrap and refrigerate until ready to use. I like to leave my layers in the fridge for quite a bit so they can firm up and make it easier to assemble and decorate the cake. Specially an oil based cake such as this one, which is a super moist and fluffy cake.
Chocolate Fudge Frosting
  • Start by melting the chopped dark chocolate in the microwave or in a double boiler. Make sure to chop the chocolate finely, so it’s easier to melt it.
  • Let it cool until it isn’t warm to the touch any longer.
  • While the chocolate cools down, you can gather the rest of the ingredients.
  • Sift powdered sugar and cocoa powder together. Set aside.
  • Place butter in the bowl of an electric mixer.
  • Cream butter for about 2 minutes on medium speed.
  • Turn mixer off, add sifted powdered sugar and cocoa powder to the bowl.
  • Turn mixer on low to combine the ingredients together.
  • Once they are combined, you can turn the speed up. Cream on medium high for about 30 seconds.
  • Add melted chocolate, mix until combined.
  • Add vanilla, milk and cream frosting on medium high for 45 seconds.
  • Check for consistency. If frosting is too thick and dry, add a bit more milk, about 1 teaspoon at a time, mixing in between.
  • If the mixture is too runny, there might be two options. You may either add some more sifted powdered sugar. Or it may be the case that your butter or chocolate were too warm when you made the frosting, or your kitchen might be too warm. In this situation, you want to cover your frosting bowl with plastic wrap and place it in the fridge for a few minutes, about 10 or so. Cream frosting again, and check for the consistency.
Marshmallow Frosting
  • Mix all ingredients, except for the vanilla extract together in the bowl of a stand mixer.
  • Set the bowl over a pot of simmering water over medium heat.
  • Whisk mixture while it sits in the double boiler.
  • Keep whisking over simmering water until it reaches 140F.
  • That way the egg whites will be in a safe temperature to be consumed.
  • Move bowl to the mixer.
  • Whip with the whisk attachment for about 5 minutes on high speed.
  • Add vanilla and mix to combine.
To assemble
  • Brush each layer of the cake with simple syrup.
  • For each layer, simply pipe a ring of the Chocolate Fudge Frosting on the edge of the cake, so the Marshmallow Frosting that is going in the filling won’t slip out and drip to the sides. Fill each layer with Marshmallow Frosting.
  • Cover the cake with the Chocolate Fudge Frosting.
  • Spread some Graham Cracker crumbs on the sides of the cake.
  • Top with some of the Chocolate Fudge Frosting and then the Marshmallow Frosting on top.
  • Use a blow torch to toast the Marshmallow Frosting.
  • Store this cake in the fridge, covered for up to 5 days. You may freeze the Chocolate Fudge Frosting for up to 2 months, in case you have leftovers of it. Don’t freeze the marshmallow frosting, because since it’s a meringue, it will be unstable and collapse after a while.


Coffee: If you don’t want to use coffee in the cake batter, you can use boiling water. Just mix 1 teaspoon of espresso powder in with the dry ingredients or skip it all together.
Keyword cake, smores


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    1. Hey I used an ateco 829. The link is up there right on top of the recipe. I actually have two links, one for just the ateco 829 tip and the other link is for a piping tip kit that contains that tip, plus other awesome ones! Thanks 🙂

  1. 5 stars
    This looks so good, I decided to make it for my own birthday 😊 One question, how do you mediate your ingredients? you give us 3 options and I was wondering which is your favorite? grams, once’s or cups? …just baked the cakes, they look so moist and tender, will be making the frostings a bit later.

    1. I usually use my scale, and I use both grams and ounces because some measurements I memorized in ounces (like 4.5 oz=1 cup flour) and some measurements I memorized in grams (like 1 cup sugar=200 grams) lol so it varies. But I try to use my scale as much as possible, for accuracy!
      Thank you so much Jennifer, I hope you enjoy the cake!!! And happy birthday!!!🥳

      1. On the flour it says 183 grams or 5.4 onces but that’s not the same, it’s 6.4 onces for 183 grams. That’s what confused me since I was using a scale and trying to see which measurement to use.

        1. Oooops that was probably a typo or I was looking at my handwriting when I was typing, you’re correct, it’s 6.4 oz. Thank you so much for pointing it out. I’ve corrected it!!! Thank you!!!

    1. boil equal parts of water and sugar, so for example 1/2 cup of water and 1/2 cup of sugar, when it comes to a boil turn the heat off, let the syrup cool down all the way to room temperature. You can also flavor this syrup, by adding any extract of flavoring once it’s done boiling.

  2. Thank you so much for emailing me back! I can’t wait to make it for my husband’s 30th birthday on October 3rd.

  3. I am making it right now, but the marshmallow frosting is not really fluffing up… Like I don’t think this will be enough to put between the layers. Should I keep mixing or did I do something wrong?

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