Introduction
What if you could enjoy the iconic campfire s’mores experience in the form of a rich, decadent cake? Enter the S’mores Cake—a mouthwatering dessert featuring layers of moist chocolate cake, creamy marshmallow frosting, crunchy graham cracker crumbs, and a gooey chocolate ganache drizzle.
This cake is perfect for birthdays, holidays, or just because you’re craving s’mores but don’t have a campfire nearby. It combines the best parts of s’mores—graham crackers, marshmallows, and melted chocolate—but in a beautifully layered cake that’s sure to impress.
Let’s dive into the recipe and learn how to make the ultimate homemade S’mores Cake! 🔥🍫

Ingredients
For the Chocolate Cake:
- 2 cups all-purpose flour
- 1 3/4 cups granulated sugar
- 3/4 cup unsweetened cocoa powder
- 1 1/2 teaspoons baking powder
- 1 1/2 teaspoons baking soda
- 1 teaspoon salt
- 2 large eggs
- 1 cup whole milk
- 1/2 cup vegetable oil
- 2 teaspoons vanilla extract
- 1 cup boiling water
For the Marshmallow Frosting:
- 1 cup unsalted butter, softened
- 1 (7 oz) jar of marshmallow creme (marshmallow fluff)
- 2 cups powdered sugar
- 1 teaspoon vanilla extract
For the Chocolate Ganache:
- 1 cup semi-sweet chocolate chips
- 1/2 cup heavy cream
For the Graham Cracker Layer & Topping:
- 1 1/2 cups graham cracker crumbs
- 1/4 cup melted butter
- 1/4 cup granulated sugar
Optional Garnishes:
- Mini marshmallows (to toast on top!)
- Extra graham cracker crumbs
- Chocolate shavings or pieces
Directions
Step 1: Make the Chocolate Cake
- Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a large bowl, whisk together flour, sugar, cocoa powder, baking powder, baking soda, and salt.
- Add eggs, milk, vegetable oil, and vanilla extract. Beat on medium speed until smooth.
- Stir in boiling water (batter will be thin, but that’s okay—it makes the cake super moist!).
- Pour batter evenly into the prepared cake pans.
- Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
- Let the cakes cool completely before assembling.
Step 2: Prepare the Graham Cracker Layer
- In a small bowl, combine graham cracker crumbs, melted butter, and sugar.
- Press the mixture onto a parchment-lined baking sheet and bake at 350°F (175°C) for 8 minutes.
- Let it cool, then break it into crumbles for layering.
Step 3: Make the Marshmallow Frosting
- In a large mixing bowl, beat butter until smooth.
- Add marshmallow fluff and vanilla extract, and mix until fluffy.
- Gradually add powdered sugar, beating until fully combined.
Step 4: Make the Chocolate Ganache
- Heat heavy cream in a small saucepan until it begins to steam (don’t boil!).
- Pour over chocolate chips and let sit for 2 minutes.
- Stir until smooth and glossy.

Step 5: Assemble the S’mores Cake
- Place one chocolate cake layer on a serving plate.
- Spread a layer of marshmallow frosting, followed by a sprinkle of graham cracker crumbs.
- Add the second cake layer, then cover the entire cake with marshmallow frosting.
- Drizzle chocolate ganache over the top, letting it drip down the sides.
- Sprinkle with extra graham cracker crumbs and top with mini marshmallows.
Step 6: Toast the Marshmallows (Optional, But Recommended!)
- If you have a kitchen torch, lightly toast the mini marshmallows on top for a real s’mores effect.
- If you don’t have a torch, place the cake under the oven broiler for 30 seconds—watch it carefully to avoid burning!
Servings and Timing
- Servings: 12-16 slices
- Prep Time: 25 minutes
- Cook Time: 35 minutes
- Cooling & Assembly Time: 45 minutes
- Total Time: 1 hour 45 minutes
Variations of S’mores Cake
- S’mores Cupcakes: Use the same ingredients, but bake as cupcakes instead. Pipe on the marshmallow frosting and drizzle with ganache!
- Peanut Butter S’mores Cake: Add a layer of peanut butter frosting between the cakes for a nutty twist.
- Cookies & Cream S’mores Cake: Mix crushed Oreo cookies into the graham cracker crumbs for an extra chocolatey crunch.
- Extra Gooey Version: Add a layer of melted marshmallows between the cake layers instead of just the frosting!
Storage and Reheating
How to Store S’mores Cake
- Refrigerator: Keep the cake covered in the fridge for up to 5 days. Let it sit at room temperature for 30 minutes before serving.
- Freezing: You can freeze the individual cake layers (before frosting) for up to 3 months. Wrap in plastic wrap and store in an airtight container.
How to Reheat for Maximum Gooeyness
- Warm individual slices in the microwave for 10-15 seconds to soften the marshmallow and chocolate.
10 Frequently Asked Questions (FAQs)
1. Can I use a cake mix instead of making the cake from scratch?
Absolutely! A chocolate cake mix works great if you’re short on time.
2. What can I use if I don’t have marshmallow fluff?
Melt mini marshmallows with a little butter for a homemade substitute.
3. How do I make the cake extra moist?
Adding sour cream or buttermilk in place of some of the milk makes it even richer!
4. Can I make this cake in a 9×13 pan instead?
Yes! Simply bake in a 9×13-inch pan for about 35-40 minutes.
5. How can I make this cake gluten-free?
Use a gluten-free chocolate cake mix and substitute gluten-free graham crackers.
6. Can I use milk chocolate instead of semi-sweet for the ganache?
Yes! If you prefer a sweeter ganache, milk chocolate works beautifully.
7. What’s the best way to crush graham crackers?
Use a food processor or crush them in a Ziploc bag with a rolling pin.
8. Can I toast the marshmallows in the oven?
Yes, but be careful! Use the broiler for 30 seconds, watching closely.
9. Can I use store-bought frosting?
Of course! A marshmallow or vanilla frosting works as a quick swap.
10. What’s the best way to slice this cake neatly?
Run a sharp knife under hot water, wipe it dry, and cut for cleaner slices.
Conclusion
S’mores Cake takes the beloved campfire classic and transforms it into a show-stopping dessert that’s rich, gooey, and packed with all the flavors you love. Whether you’re making it for a special occasion or just a cozy night in, this cake is guaranteed to impress.
So grab your fork (or your hands, no judgment!) and dig into this ooey-gooey, chocolatey, marshmallowy masterpiece. 🔥🍫✨
Let me know—what’s your favorite s’mores-inspired dessert? 😍