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If you’re looking for a dessert that is easy to make and sure to please a crowd, then this Easy S’mores Cake Recipe is the perfect choice. With a rich chocolate cake base, a layer of graham crackers and mini marshmallows, and a fluffy marshmallow frosting, this cake is a crowd-pleaser that everyone will love.

The best part? It’s a breeze to make, using a simple cake mix as the base. S’more made simple.

A chocolate easy s'mores cake recipe with crushed graham crackers topped with marshmallow frosting on a white plate.


I still remember the excitement of trying s’mores for the first time as a kid. The combination of melted marshmallows, gooey chocolate, and crispy graham crackers was a taste sensation like no other.

That’s why I was inspired to create a s’mores cake that could be shared with loved ones at family gatherings. After all, we can’t always be gathered around a campfire.

The recipe is a nod to the classic s’mores flavors but in the form of a cake that’s easy to make and perfect for sharing. It brings back all the fond memories of sitting around the campfire, but now we can enjoy those flavors all year round, no matter where we are.

Ingredient Notes

  • 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
A labeled image of ingredients needed for an easy s'mores cake recipe.

Variations and Substitutions

  • 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.
  • 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.
  • 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.
  • Toasted Marshmallows: Take the marshmallows a little further by toasting them under the broiler or with a kitchen torch and topping the cake with toasted marshmallows.

How To Make an Easy S’mores Cake Recipe

Be sure to see the recipe card below for exact ingredients and full recipe instructions!

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.

A collage image shows a glass bowl of ingredients and the cake pan with batter poured into it.

Step 2 | Bake 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.

A baked s'mores cake in a glass 9 X 13 pan.

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. 

A collage image shows a bowl of frosting ingredients, and then the cake frosted and topped with mini marshmallows and graham cracker crumbs.

Now you’re ready to serve and enjoy your delicious s’mores cake!

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.
  • 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.
A wooden spatula holding a piece of easy s'mores cake recipe that was removed from the cake pan.

Recipe FAQ’s

Can I use a different size baking pan?

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.

How do I know when the cake is done baking?

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.

Can you make s’mores cake gluten-free?

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.

A slice of easy s'mores cake with a bite removed from the cake on a white plate.

Storage & Make Ahead Instructions

Make Ahead: 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.

Storage: 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.

What to Serve with Easy S’mores Cake

S’mores 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. Memorial Day and July 4th are just around the corner.

Fire up the grill and enjoy some cheddar and bacon burgers, a light spaghetti pasta salad, and corn on the cob. A cool burrata caprese salad is always welcomed on a warm day.

Then end the meal with this deliciously amazing s’mores cake and a bright lemon pudding poke cake.

More Chocolate Cake Recipes

More S’mores Recipes to Try

If you love the classic S’mores taste give our S’mores Cereal Bars, Gooey S’mores Dip, No-Churn S’mores Ice Cream, or S’mores Brownies a try!

Hungry for more easy, home-cooked, delicious recipes?

Sign up for my free recipe club to get family-friendly recipes in your inbox each week! Find me sharing daily meal-time inspiration on Pinterest, Facebook, Instagram, and Twitter.

A slice of S'mores cake on a white plate with the can pan, a carafe of milk, and a tea towel in the background.
Recipe
5 from 7 votes

(click stars to rate)

Easy S’mores Cake Recipe

Prep Time: 15 minutes
Cook Time: 30 minutes
Cool Time: 30 minutes
Total Time: 1 hour 15 minutes
Servings: 12 servings
Author: Nikki Lee
This easy s'mores cake recipe is a perfect dessert for those who love the classic campfire treat. The chocolate cake mix is infused with graham crackers, and topped with a fluffy marshmallow frosting, creating a deliciously decadent dessert that is sure to impress your friends and family.
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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.

Nutrition Information

Serving: 1serving Calories: 368kcal (18%) Carbohydrates: 64g (21%) Protein: 4g (8%) Fat: 12g (18%) Saturated Fat: 3g (19%) Polyunsaturated Fat: 4g Monounsaturated Fat: 4g Trans Fat: 0.01g Cholesterol: 47mg (16%) Sodium: 421mg (18%) Potassium: 159mg (5%) Fiber: 1g (4%) Sugar: 42g (47%) Vitamin A: 69IU (1%) Calcium: 69mg (7%) Iron: 2mg (11%)

Nutritional Disclaimer

Soulfully Made is not a dietician or nutritionist, and any nutritional information shared is only an estimate. We recommend running the ingredients through an online nutritional calculator if you need to verify any information.

©️Soulfully Made

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11 Comments

  1. 5 stars
    This recipe made me want to cry because it was so good! Love the combo of the chocolate with the mallows!

  2. 5 stars
    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.

  3. 5 stars
    This is the best cake bite I have ever had! Heaven on earth. Love it and will be making it a million times.

  4. 5 stars
    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.