S'mores Cake
Campfire energy.
Bakery finish.
All the s’more flavor you want, none of the sugar crash you do not.
Time: about 2 hours active and about 1 hour chill and freeze.
Yield: one 8 inch triple layer cake.
Flavor vibe: chocolate, toasted marshmallow, real graham.
Texture: plush crumb, silky ganache, glossy toasted veil, crisp crunch.
Signature move: toasted marshmallow Swiss meringue inside plus a thin marshmallow veil for torching.
If you came here looking for a smores cake recipe that actually eats like the campfire classic, you are in the right place. This version layers a true graham cracker cake with blended milk and dark chocolate ganache and a toasted marshmallow Swiss meringue buttercream that stays silky and never cloying. The outside gets a whisper thin marshmallow meringue that toasts to deep golden, then a scatter of graham crunch for snap and a few torched marshmallows on top for drama.
The build is deliberate. Graham crumbs go into the batter so the cake smells like warm crackers and honey the moment you open the oven. A blend of milk chocolate and darker chocolate in the ganache keeps the flavor round and not too sweet. The buttercream uses a toasted marshmallow paste folded in at the end so you get that classic pull without a dense chew. A thin gelatin set veil on the outside gives shine, clean slice lines, and perfect toast marks.
I tested this several times to land on a crumb that stacks without doming, a ganache that spreads clean but does not ooze, and a buttercream that stays soft even after chilling. I brush the layers with a light honey milk soak for moisture insurance. Sprinkle in a little graham crunch between the cake and ganache for texture that stays crisp, then finish with a few chocolate chunks for that just-unwrapped chocolate bar moment. For elements, see my toasted marshmallow Swiss meringue buttercream and my homemade graham crackers for the finest crumbs and the best crunch.
You get real s’more flavor, a balanced sweetness, and neat slices that hold at room temp for the length of a party.
“This is what happens when a campfire brings a pastry chef to the party.”
Ingredient Notes
Graham cracker crumbs in the batter
Very fine crumbs give better structure. If your crumbs feel the least bit soft, re dry them briefly at 300 F, then cool before using for an even, plush crumb.
Browned butter, oil, and honey
Browned butter adds toasted depth while a little neutral oil keeps tenderness even after refrigeration. Honey echoes classic cracker flavor without making the cake sticky.
Ganache blend
Milk chocolate plus a portion of darker chocolate gives a round, not too sweet filling that still tastes like the bar you would use by a fire.
Toasted marshmallow Swiss meringue
Warm the whites and sugar to 160 F until there is no grit before whipping. This dissolves sugar for a smooth texture and also addresses safety for fresh egg whites. The toasted marshmallow paste folds in at the end for a light pull and real flavor.
Marshmallow decor and/or veil with gelatin
A thin coat of marshmallow meringue set with a touch of gelatin gives shine, clean edges, and perfect toast marks, and it holds for several hours without sliding. Sugar stabilizes egg white foams by increasing viscosity which supports better structure as you torch. For more on the Science of Meringues check out the article from Food Crumbles.
Graham crunch
Bake the crumbs with a little butter and sugar until lightly toasted. Keep it thin between cake and ganache so you get crisp bits without shattering the layers.
Smart swap box
Use a refined avocado oil for the neutral oil. It stays flavor neutral and is a solid choice for baking.
Equipment that matters
A stand mixer or sturdy hand mixer for the meringues, three 8 inch pans with parchment, an instant read thermometer for 160F, and a kitchen torch for an even toast.
How To Make It
Bake the cake layers
Whisk the dries, whisk the fats and sugars, then eggs, honey, and vanilla. Alternate dries with buttermilk. Mix just to smooth. Bake at 325 F until the centers spring back and a tester is clean.
Make the ganache
Heat cream to steaming, pour over chopped chocolate, rest, whisk smooth, then finish with butter and salt. Cool until spreadable. Whip briefly if you want a lighter texture.
Whip the toasted marshmallow Swiss meringue buttercream
Warm whites, sugar, and salt to 160 F with no grit, whip to stiff glossy peaks and room temp, add soft butter in stages until silky, then vanilla, then the cooled toasted marshmallow paste.
Build clean layers
Level and lightly soak cakes. Pipe a tall buttercream dam, spread ganache inside, sprinkle a thin even coat of graham crunch, repeat, then crumb coat and chill. Finish with a smooth buttercream coat.
Toast the veil
Swipe on a very thin coat of marshmallow meringue, make soft swoops and peaks, and torch to a deep golden with a few darker kisses. Add milk chocolate chunks, extra crunch shards, and a few toasted marshmallows on top.
Why You'll Love This
Real graham in the cake, not just a crumb garnish, so the flavor reads true.
Plush, even crumb that stacks clean with a ganache that spreads smooth.
Make ahead friendly with clear timing for each element.
Perfect celebration cake for birthdays, cookouts, or the first chilly night of fall.
Toasted marshmallow flavor in the buttercream and a glossy marshmallow veil on the outside.
Pro Tips and Fixes
- Cake edges look too dark, pull sooner next time and keep the bake at 325F since graham browns quickly.
- Ganache is runny, it is still warm or slightly over creamed, chill a few minutes and stir, then spread when it holds a clean ridge.
- Swiss meringue looks curdled after adding butter, keep mixing, it will come together once the butter and meringue match temperatures.
- Marshmallow veil slumps, the cake was not fully chilled or the coat was too thick, chill the buttercream finish until firm, use a very thin veil and torch lightly.
- Storage and serving, chill the finished cake for 20 to 30 minutes for neat slices, wipe the knife between cuts, serve at cool room temp.
FAQs
How do I keep a smores cake moist?
Brush each cooled layer with a light honey milk soak. It adds moisture insurance without making the crumb dense.
Can I make smores cake ahead for a party?
Yes. Bake layers a day ahead and wrap at room temp. Make ganache and graham crunch two days ahead. Buttercream can be made a day ahead and re whipped to silky before you assemble. Torch the outer veil close to serving.
What can I swap if I do not have milk chocolate?
Use all semisweet and add a touch more honey in the soak or buttercream to balance. You can also use a favorite chocolate bar with similar cocoa percentage.
More Recipes Like This
Triple Layer Chocolate Buttermilk Cake, shares the plush crumb and ganache finish with a different flavor story
Equipment
- 3 8" cake pans
- stand mixer or hand mixer
- Instant read thermometer
- kitchen torch
- Digital scale
Ingredients
Graham cracker cake layers
- 270 g all purpose flour
- 225 g very fine graham cracker crumbs
- 1 tbsp baking powder
- 3/4 tsp baking soda
- 1 1/2 tsp fine sea salt
- 1/2 tsp ground cinnamon
- 195 g unsalted butter 157g browned butter cooled to a soft paste
- 90 g neutral oil I used refined avocado oil
- 150 g light brown sugar
- 120 g granulated sugar
- 3 large eggs room temp
- 360 g buttermilk room temp
- 45 g honey
- 1 tbsp vanilla extract
Optional honey milk soak
- 180 g whole milk warmed
- 1 tbsp honey
Blended chocolate ganache
- 300 g milk chocolate
- 150 g dark chocolate
- 250 g heavy cream
- 2 tbsp unsalted butter
- 1/2 tsp fine sea salt
Toasted marshmallow Swiss meringue buttercream
- 300 g egg whites
- 400 g granulated sugar
- 1/2 tsp fine sea salt
- 600 g unsalted butter room temp, cubed
- 1 tbsp vanilla extract
Toasted marshmallow paste
- 300 g mini marshmallows broiled to deep golden brown
- 60 g heavy cream warmed
Marshmallow meringue for torching
- 120 g egg whites
- 180 g granulated sugar
- 1 pinch cream of tartar
- 5 g powdered gelatin bloomed in 25 g cold water
Graham crunch
- 150 g graham cracker crumbs
- 45 g granulated sugar
- 60 g unsalted butter melted
- 1 pinch fine seas salt
Instructions
Graham cracker cake layers
- Heat oven to 325 F. Line three 8 inch pans with parchment and lightly butter the sides.
- Whisk all dry ingredients in a large bowl until even.
- In another large bowl whisk browned butter, oil, and both sugars until glossy.
- Whisk in eggs one at a time, then honey and vanilla.
- Add dry mix in two additions alternating with buttermilk. Mix just to smooth.
- Divide evenly between pans. Bake until centers spring back and a tester is clean. Start checking at 22 minutes. Most ovens land around 22 to 28 minutes.
- Cool 10 minutes in the pans, then turn out to cool completely on racks.
Honey Milk Soak
- Stir warm milk, honey, and salt until dissolved.
- Lightly brush a thin coat on each cooled cake layer just before assembly.
Blended chocolate ganache
- Heat cream to steaming. Pour over the chopped chocolates in a heatproof bowl.
- Rest 2 minutes, then whisk smooth.
- Whisk in butter and salt until glossy.
- Cool to a thick spreadable state. For a lighter texture whip briefly once cool.
- Target use about 325 to 350 g per filling layer. Reserve any extra for touch up.
Toasted marshmallow Swiss meringue buttercream
- In a clean bowl set over barely simmering water, warm egg whites, sugar, and salt while whisking until 160 F and no grit between your fingers.
- Transfer to a mixer and whip to stiff glossy peaks and room temperature.
- With the mixer on medium add butter a few cubes at a time until silky.
- Beat in vanilla.
- Fold in the fully cooled toasted marshmallow paste.
Toasted marshmallow paste
- Broil mini marshmallows on a lined tray until deep golden.
- Scrape into a bowl, add warm cream, and stir until smooth. Cool completely before folding into the buttercream.
Marshmallow meringue for torching
- In a clean bowl over barely simmering water, warm egg whites, sugar, and cream of tartar while whisking until 160 F.
- Whip to stiff peaks.
- Gently melt the bloomed gelatin until fluid and just warm. Stream it into the meringue while mixing on low, then increase speed for 10 to 15 seconds to combine.
- Use right away.
Graham crunch
- Heat oven to 300 F.
- Mix graham crumbs, sugar, melted butter, and salt until evenly moistened.
- Bake on a lined tray about 10 minutes until lightly toasted. Cool fully. Keep the layer thin in the cake so it stays crisp.
Assembly
- Level cakes. Lightly brush the honey milk soak if using.
- Pipe a high buttercream dam around the edge of the first layer.
- Spread a generous layer of ganache inside the dam. Sprinkle a thin even coat of graham crunch.
- Add the second cake layer and repeat.
- Crumb coat the entire cake with buttercream. Chill until firm.
- Apply a smooth buttercream finish. Chill again until set.
- Swipe on a very thin coat of marshmallow meringue, make swoops and peaks, and torch to deep golden with a few darker kisses.
- Garnish with milk chocolate chunks, extra graham crunch shards, and a few toasted marshmallows on top.
Notes
• Two days out brown the butter and make ganache and graham crunch. Cover ganache and hold at room temp overnight or chill then bring back to spreadable. Store crunch airtight.
• One day out bake cake layers then cool and wrap. Room temp storage is fine. Make the toasted marshmallow buttercream and use the same day or refrigerate then bring back to silky with a quick rewhip.
• Day of assembly level, soak, fill, crumb coat, and finish with buttercream. Mix the marshmallow meringue last and torch just before serving or a few hours before. Storage
• Hold the finished cake lightly covered at cool room temp up to 6 hours. Refrigerate for longer storage. For clean slices chill 20 to 30 minutes, wipe the knife between cuts, and serve at cool room temp. Ingredient tips
• Keep salt present in every component so the cake reads balanced rather than sweet.
• If you want a stronger graham note replace another 20 g of flour with graham crumbs and keep the bake at 325 F.
• Neutral oil use a refined avocado oil for a healthier choice that stays flavor neutral.
• For a smoky campfire note steep a little lapsang tea in the hot cream for the ganache for 5 minutes then strain. Texture insurance
• Do not overbake. Graham crumbs brown fast so pull as soon as centers spring back.
• If crumbs for the batter feel soft spread on a pan and re dry at 300 F for 5 to 8 minutes then cool before using.
Nutrition
