Easy S'mores Cake

This easy S'mores Cake has ribbons of marshmallow fluff, graham crackers, and chocolate in a rich fudge cake. Get that irresistible s'mores flavor in every bite!

🤎 Why You'll Love This Cake

• It's everything you love about the summer treat, just in a cake! In every bite of Smores Cake, you're going to get a little taste of each element of a classic S'mores. Marshmallow creme, chocolate, and graham crackers are swirled throughout a rich chocolate cake base.
• This cake is special enough to be a birthday cake but simple enough to make for a weekend dessert. It's one of those great fake-out recipes that looks complicated but is so simple to whip up.

🍫 Ingredients & Substitutions

• 15.25oz box of fudge cake mix - There are several different chocolate cake mixes out there. I chose fudge because it's going to be a little bit richer and denser. I didn't quite want the thickness of brownies, so I went with cake mix - that being said, brownie mix would be delicious too!
• 3 eggs
• 1 stick of butter - Make sure this is softened (room temperature) before mixing the cake.
• 1 cup of milk
• 2 teaspoons of vanilla extract
• 16oz jar of chocolate frosting - The jarred stuff is just fine. You can also mix 2 sticks of softened butter, 3 cups of powdered sugar, and ½ cup cocoa powder (adding milk to thin as needed).
• 2 cups marshmallow fluff
• 3 cups jumbo marshmallows - you'll need jumbo (as opposed to mini marshmallows) so they don't completely melt during baking. The jumbo variety leave a little bit of toasted marshmallow behind in the cake.
• 4oz chocolate bar - I recommend the kind that's made to break into small chunks.
• 2 tablespoon butter - This should be melted.
• 1 sleeve of graham crackers

Cake Additions

The name of the game here was easy; I wanted to make this as simple as possible to make. However, there are a few elements you could add to up the wow factor on your Smores Cake.

• I almost added a layer of chocolate ganache below the chocolate marshmallow cream topping to give it even more depth, but I ultimately cut it to make the cake as simple as possible. If you'd like to add that, just use the Chocolate Ganache topping from my Graham Cracker Eclair Cake recipe and pour over the cake 30 minutes before adding marshmallow creme to the top.
• You could add a graham cracker crust to the bottom of the cake pan, below your swirly cake layer. Just follow the graham cracker crust instructions from my Banana Split Cake.

Hey, chocolate fans. 🍫 Check out my Easy Air Fryer Smores and Cake Pops with Oreo Cookies recipes, too!

👩🏻‍🍳 How to Make S'mores Cake

1. Make the chocolate cake mix base. In a large bowl, whisk together 1 box of cake mix, 3 eggs, 1 stick of softened butter, 2 teaspoon vanilla extract, and 1 cup of milk with a hand mixer on medium speed. Pour in the bottom of a 9x13" glass dish prepared with cooking spray.
2. Swirl in chocolate frosting & marshmallow fluff. Spoon 1 cup of marshmallow fluff and 1 cup of chocolate frosting over the cake mix in big dollops. With a spoon, gently swirl the two into the mix. You don't want to completely stir; you should still see separate swirls of marshmallow, frosting, and cake batter. Make sure you swirl the mixture to the end of the pan.

3. Add more chocolate, marshmallows, and graham crackers. Sprinkle 3 cups of jumbo marshmallows, ½ a sleeve of graham crackers (broken into chunks), and 4oz chocolate bar pieces over the top of the swirl mixture and gently press into the batter.
4. Bake the cake at 350 degrees for 35-40 minutes, until the center of the cake is not jiggly. Let cool for 15-20 minutes.

Note: The cake rises a lot during baking. Don't worry - it will settle back down as it cools.

5. Frost cake. Mix together the remaining 1 cup of marshmallow fluff and 1 cup of chocolate frosting, not totally blending so there are still swirls throughout. Frost the baked, cooled cake with this mixture.
6. Sprinkle graham cracker crumble. Crush the remaining ½ sleeve of graham crackers into fine crumbs. Mix with 2 tablespoons of melted butter. Sprinkle these graham cracker crumbs over the top of the frosting.

🥡 Leftover Storage

STORAGE: This cake should be enjoyed within 2-3 days of preparation. Just cover the cake pan with plastic wrap or aluminum foil.

FREEZING: This cake can also be frozen. Omit the graham cracker crumbs on top of the cake and freeze in an airtight container for up to 6 months. After thawing in the refrigerator, add graham cracker crumbs to the top of the cake.

✅ Helpful Tips and Tricks

• This is a dish best served warm. It's delicious the next day, but there's just something about that ooey-gooey marshmallow and melted chocolate right out of the oven. Pop a slice in the microwave for 15-20 seconds for a warm, gooey, chocolatey treat!
• If you have a kitchen torch on hand, you can toast the marshmallow fluff on top of the cake before adding the graham cracker crumbs. This will give the cake even more flavor depth.

❓ FAQs

Let me see those yummy Smores Cakes! 🍫 Tag me on social media (@lambertslately) with your cake creations. You can also let me know what you think by rating ⭐️ or commenting below!

S'mores Cake

By: Leslie Lambert

This easy S'mores Cake has ribbons of marshmallow fluff, graham crackers, and chocolate in a rich fudge cake. Get that irresistible s'mores flavor in every bite!

4.98 from 41 votes

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Cook ModePrevent your screen from going dark

Prep Time 30 minutes mins

Cook Time 40 minutes mins

Total Time 1 hour hr 10 minutes mins

Course Dessert

Cuisine American

Servings 16

Calories 540 kcal

Ingredients

  

1x2x3x

• ▢ 15.25 oz fudge cake mix (1 standard box)
• ▢ 3 eggs
• ▢ 1 stick butter (softened)
• ▢ 1 cup milk
• ▢ 2 teaspoons vanilla extract
• ▢ 2 cups marshmallow fluff
• ▢ 16 oz chocolate frosting
• ▢ 3 cups jumbo marshmallows
• ▢ 4 oz chocolate bar (broken into pieces)
• ▢ 2 tablespoon butter (melted)
• ▢ 1 sleeve graham crackers (half broken into chunks; half into crumbs)

Instructions

 

• In a large bowl, mix together 1 box of cake mix, 3 eggs, 1 stick of butter, 2 teaspoon vanilla extract, and 1 cup of milk. Spread in the bottom of a greased 9x13" glass dish.
• Spoon 1 cup of the marshmallow fluff and half of the tub of chocolate frosting over the cake mix. With a spoon, gently swirl the two into the batter. You don't want to mix; you should still see separate swirls of marshmallow fluff, frosting, and cake batter. Make sure you swirl the mixture to the end of the pan.
• Sprinkle 3 cups of jumbo marshmallows, ½ sleeve of graham cracker chunks, and 4oz of chocolate bar pieces over the top of the swirl mixture and gently press in.
• Bake cake at 350 degrees for 35-40 minutes, until the center of the cake is not jiggly. Let cool for 15-20 minutes.
• Mix together remaining 1 cup of marshmallow fluff and 1 cup of chocolate frosting, not totally blending so there are still swirls throughout. Frost cake with this mixture.
• Crush the remaining ½ sleeve of graham crackers into fine crumbs. Mix with 2 tablespoons of melted butter. Sprinkle these graham cracker crumbs over the top of the frosting.

Notes

• This dish is best enjoyed warm, especially with the melty chocolate and ooey-gooey marshmallows straight out of the oven. While it’s still good the next day, microwaving a slice for 15-20 seconds brings back that warm, gooey magic.
• If you have a kitchen torch, you can toast the marshmallow fluff before sprinkling graham cracker crumbs to add even more flavor depth to the cake!

Nutrition Facts

Calories: 540kcalCarbohydrates: 92gProtein: 5gFat: 20gSaturated Fat: 9gPolyunsaturated Fat: 3gMonounsaturated Fat: 7gTrans Fat: 0.3gCholesterol: 51mgSodium: 386mgPotassium: 205mgFiber: 1gSugar: 67gVitamin A: 291IUCalcium: 71mgIron: 2mg

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