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S’mores Chocolate Cake

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This s’mores chocolate cake layers moist chocolate cake with toasted marshmallow filling, rich frosting, and graham cracker crunch. A show-stopping dessert inspired by the classic campfire treat.

Ingredients

For the Chocolate Cake Layers:

2 cups all-purpose flour

3/4 cup unsweetened cocoa powder

2 cups granulated sugar

2 tsp baking powder

1 1/2 tsp baking soda

1 tsp salt

2 large eggs, room temperature

1 cup whole milk

1/2 cup vegetable oil

2 tsp vanilla extract

1 cup hot coffee or hot water

For the Chocolate Frosting:

1 1/2 cups unsalted butter, softened

3 1/2 cups powdered sugar

3/4 cup unsweetened cocoa powder

1/4 cup heavy cream (plus more as needed)

2 tsp vanilla extract

Pinch of salt

For the Marshmallow Filling:

1 1/2 cups marshmallow fluff or creme

1/2 cup unsalted butter, softened

1 tsp vanilla extract

For the Graham Cracker Layer:

1 1/2 cups graham cracker crumbs

1/4 cup unsalted butter, melted

Topping:

Mini or large marshmallows

Chocolate chunks or bars

Additional graham cracker pieces

Instructions

Bake the Chocolate Cake Layers

Preheat oven to 350°F (175°C). Grease and line two 9-inch round pans.

Mix dry ingredients in a bowl.

Add eggs, milk, oil, and vanilla. Mix just until combined.

Slowly add hot coffee or water and mix gently.

Divide batter between pans. Bake 30–35 minutes, until toothpick comes out clean.

Cool 10 minutes in pans, then transfer to wire racks.

Prepare the Graham Cracker Layer

Mix graham crumbs and melted butter.

Spread on a parchment-lined baking sheet.

Bake at 350°F for 8–10 minutes. Cool completely.

Make the Chocolate Frosting

Beat butter until creamy.

Add powdered sugar and cocoa gradually.

Mix in cream, vanilla, and salt. Beat until fluffy.

Make the Marshmallow Filling

Beat butter until smooth.

Add marshmallow fluff and vanilla. Beat until fluffy.

Assemble the Cake

Place one cake layer on a serving plate.

Spread a thin layer of frosting, then sprinkle half the graham crumbs.

Spread marshmallow filling over crumbs.

Add second cake layer and frost entire cake.

Decorate the Cake

Press remaining graham crumbs onto the sides.

Top with marshmallows and chocolate pieces.

Toast marshmallows briefly with a torch or broiler.

Notes

Use hot liquid to bloom cocoa and enhance chocolate flavor.

Cool cakes fully before frosting to avoid melting.

Toasting marshmallows is optional but adds authentic flavor.

Make-ahead tips: Bake cakes and prepare fillings a day in advance. Assemble before serving.