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If you’re a s’mores lover and looking for a dessert that is easy to serve to a crowd with those same flavors, our Easy S’mores Cake Recipe is the perfect choice. With a moist chocolate cake base and a fluffy marshmallow frosting, this sheet cake is simple to assemble in 15 minutes before baking.
Reader Review ⭐⭐⭐⭐⭐
“This is the best cake bite I have ever had! Heaven on earth. Love it and will be making it a million times.”
— Seema
One of my favorite nostalgic memories of summer as a child is making s’mores around the campfire. I still remember the excitement of trying s’mores for the first time and then sharing them with my kids too! A few years ago, I was trying to figure out a fun way to turn those same flavors into a S’mores Cake and the result was incredible.
My kids love this sheet cake recipe in the summertime and all year round, and I love that it’s so much easier (and less messy) to serve at a party. I start with a chocolate cake mix base that I add graham crackers and marshmallows to. Then top the cake with a marshmallow creme frosting.
Every bite truly melts in your mouth. It brings back all the fond memories of sitting around the campfire, but is so much easier! If you love a great cake recipe, my Chantilly Cake and Snickers Poke Cake are two other popular recipes.
Why You’ll Love this Recipe
- Easy to Make with Box Cake Mix: This recipe uses a box cake mix, making it a simple and easy dessert to make, even for beginner bakers.
- Crowd-Pleaser that’s Easier than Regular S’mores: Everyone loves the classic s’mores flavor combination of chocolate, graham crackers, and marshmallows. This cake is both easier to transport sand serve so it’s a win-win!
- Customize it to Your Liking: You can customize the s’mores cake recipe to suit your preferences by using different cake mix flavors, frosting, and toppings. Add more marshmallows or graham crackers to taste!
- Perfect for Any Occasion: This cake is a great dessert to serve at a summer barbecue, a birthday party, or any other celebration. It’s also a comforting dessert to enjoy during a cozy night in.
Ingredients
- Chocolate cake mix: You can use any brand of chocolate cake mix that you prefer. Some popular brands include Betty Crocker, Duncan Hines, and Pillsbury.
- Eggs: Make sure the eggs are fresh and at room temperature. If the eggs are too cold, they can cause the batter to become lumpy.
- Vegetable oil: You can use any type of oil that may affect the flavor of the cake. Vegetable oil and canola oil are both great choices.
- Water: Use room temperature water for best results.
- Graham crackers: You can use store-bought graham crackers or make your own by crushing graham crackers in a plastic bag with a rolling pin. Alternatively, you can use graham cracker crumbs.
- Mini marshmallows: These are small marshmallows, not the jumbo ones that are commonly used for making s’mores. These are the perfect bite size.
- Whipped vanilla frosting: You can use any brand of whipped vanilla frosting that you prefer or make your own frosting from scratch.
- Marshmallow fluff: This is a sweet, sticky spread that tastes just like marshmallows. This marshmallow cream can be found in jars in the baking aisle of most grocery stores
How To Make this S’mores Cake Recipe
✱ Below shows step-by-step photos and instructions. For the complete recipe, along with ingredient amounts, scroll down to the recipe card.
Step 1 | Prepare S’mores Cake Batter
To start, preheat your oven to 350°F. While that’s heating up, let’s get started on the cake batter.
In a large bowl, whisk together the cake mix, eggs, vegetable oil, and water until it’s nice and smooth.
This can be done by hand with a whisk or by using a hand mixer. You can also mix in the bowl of a stand mixer with a paddle attachment or by using a hand mixer. Start on low speed and then increase to medium speed until just combined.
Next, fold in crushed graham crackers and mini marshmallows.
Step 2 | Bake the Cake
Grease a 9×13 inch baking dish with butter or nonstick cooking spray, and pour in the cake batter. If you would like to remove the cake completely to serve, line the pan with parchment paper so that it hangs out of all sides of the pan.
Pop it in the oven and bake.
Step 3 | Prepare Marshmallow Fluff Frosting, Cool Cake & Ice Cake
While the cake is baking, let’s make the frosting.
In a separate bowl, use an electric hand mixer at medium speed to whisk together the whipped vanilla frosting and marshmallow fluff until it’s creamy and smooth. It tastes just like homemade marshmallow fluff buttercream with little effort.
Once the cake has cooled down for 30 minutes, use an offset spatula to frost the top of the cake with the frosting mixture. Be sure to cover the entire cake.
Finally, sprinkle the remaining crushed graham cracker crumble (you can use fine crumbs or larger pieces or a mixture of both) and mini marshmallows on top of the frosting.
Now you’re ready to serve and enjoy your delicious s’mores cake!
Expert Tips
- Don’t overmix the batter: Overmixing the batter can cause the cake to become tough and dense. Mix until all the ingredients are just combined.
- Use the toothpick test. You will know when this cake is done baking when an inserted toothpick comes out clean with moist crumbs and no wet batter.
- Crush the graham crackers into small pieces: Crush the graham crackers into small pieces using a food processor or by placing them in a plastic bag and crushing them with a rolling pin. This will help them distribute more evenly throughout the cake batter. I like to have a mixture of tiny pieces and some larger pieces to bite into.
- Let the cake cool before frosting: Make sure the cake is completely cooled before frosting it, as warm cake can cause the frosting to melt and slide off.
Variations
- Swap the Cake Mix: You can use different flavors of cake mix, such as vanilla or chocolate fudge, a marble cake, instead of the chocolate cake mix. This cake is also delicious with a vanilla cake and 1 ½ cups of chocolate chips.
- Have Fun with the Toppings: Instead of whipped vanilla frosting, you can use chocolate buttercream frosting, chocolate frosting, milk chocolate ganache, or cream cheese frosting. You can also sprinkle chopped nuts or drizzle caramel sauce over the frosting. Load it up with graham cracker pieces or bite-sized chocolate bars for an extra wow factor.
- Change the Filling: You can use different fillings for the cake layers, such as chocolate ganache, peanut butter, or Nutella. You can also add a layer of sliced bananas, strawberries, or raspberries for a fruity twist.
- Graham Crackers: Instead of crushed graham crackers, you can use graham cracker crumbs, graham cracker pie crust, or chocolate graham crackers. You can also substitute graham crackers with other types of cookies, such as Oreos or Nilla Wafers. Try Ritz crackers for a salty combination.
- Make the Marshmallow Topping Toasted: Take the marshmallows a little further by toasting them under the broiler or with a kitchen torch and topping the cake with toasted marshmallows.
What to Serve With Easy S’mores Cake
S’mores sheet cake is a rich and decadent dessert that pairs well with just about anything. It’s wonderful for spring or the perfect summer dessert to serve at a BBQ or any gathering or celebration. It’s always on our menu for Memorial Day and July 4th. Here are some of our favorite suggestions:
Storage
You can make this s’mores cake recipe in advance and store it in the refrigerator for up to 2 days for best results or freeze it for up to 2-3 months. However, if you plan to frost the cake, it’s best to do it just before serving to ensure the frosting is fresh and the cake looks its best.
You can store leftover cake in an airtight container, covered with foil or plastic wrap, at room temperature for 3-4 days, or in the refrigerator for up to 5 days.
FAQ’s
You can use a different size baking pan, but keep in mind that it may affect the baking time and the texture of the cake. If you use a smaller pan, the cake may take longer to bake and may be thicker, while a larger pan may result in a thinner cake that bakes more quickly.
To test if the cake is done, insert a toothpick or a cake tester into the center of the cake. If it comes out clean, the cake is done. If there is batter on the toothpick, bake the cake for a few more minutes.
Yes, you can make s’mores cake gluten-free by using a gluten-free chocolate cake mix and gluten-free graham crackers. Make sure to check the labels of all ingredients to ensure they are gluten-free.
More Chocolate Cake Recipes
- Chocolate Cake with Oreo Icing
- Oreo Brownie Poke Cake
- Chocolate Mousse Cake
- Fluffy Cake Brownies
- Snickers Poke Cake
More S’mores Recipes
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Easy S’mores Cake Recipe
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Ingredients
- 1 box chocolate cake mix
- 3 large eggs - room temperature
- ½ cup vegetable oil
- 1 ¼ cup water
- 1 cup graham crackers - crushed
- 1 cup mini marshmallows
- 12 ounce whipped vanilla frosting
- 1 cup marshmallow fluff
Instructions
- Preheat the oven to 350°F.
- While the oven preheats, prepare the cake batter by whisking together the cake mix, eggs, vegetable oil, and water. Fold in the ¾ cup of crushed graham crackers and ¾ cup of mini marshmallows.
- Coat a 9 x 13 inch baking dish with butter or nonstick cooking spray. Pour the cake batter into the pan and bake for 25 to 30 minutes (until a wooden pick inserted into the center comes out mostly clean).
- Allow the cake to cool for 30 minutes while you whisk together the frosting and marshmallow fluff with an electric hand mixer.
- Once the cake has had time to cool, use a spatula to frost the cake. Top your cake with the remaining graham crackers and marshmallows.
- Serve and enjoy!
Notes
- Don’t overmix the batter: Overmixing the batter can cause the cake to become tough and dense. Mix until all the ingredients are just combined.
- Crush the graham crackers into small pieces: Crush the graham crackers into small pieces using a food processor or by placing them in a plastic bag and crushing them with a rolling pin. This will help them distribute more evenly throughout the cake batter. I like to have a mixture of tiny pieces and some larger pieces to bite into.
- Let the cake cool before frosting: Make sure the cake is completely cooled before frosting it, as warm cake can cause the frosting to melt and slide off.
- You can make this s’mores cake recipe in advance and store it in the refrigerator for up to 2 days for best results or freeze it for up to 2-3 months.
- If you plan to frost the cake, it’s best to do it just before serving to ensure the frosting is fresh and the cake looks its best.
- You can store leftover cake in an airtight container or covered with foil or plastic wrap at room temperature for up to 3-4 days or in the refrigerator for up to 5 days.
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I’m making it now. I’ll let you know how it turns out!
A decadent treat that captured the nostalgic flavors of a campfire favorite.
Thank you, Jess! One of my favorite treats.
This recipe made me want to cry because it was so good! Love the combo of the chocolate with the mallows!
Thank you, Amy! It’s a treat that brings back childhood memories for me!
What a great way to enjoy s’mores over the summer, no campfire required! This was so easy and tasted just how I expected. So delicious. Thanks for the recipe.
Thank you, Dana! I love the campfire flavors wrapped up in cake form.
This is the best cake bite I have ever had! Heaven on earth. Love it and will be making it a million times.
Thank you, Seema! That sure makes my day!
We love to camp and my whole family is crazy about smores, so this cake was a big hit! I’ll make it again for sure.
Thank you, Collen! I am so glad to hear you enjoyed and will be making this one again.