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4 from 13 votes
S'mores Cake
Prep Time
1 hr
Cook Time
40 mins
Total Time
1 hr 40 mins
This s'mores cake is a chocolate lovers dream. Get your fork ready for rich chocolate ganache, buttery graham cracker crumbles and gooey marshmallow frosting!
Course: Cake
Cuisine: American
Keyword: s'mores cake
Servings: 12 servings
Calories: 749 kcal
Chocolate Cake
  • 2 cups all purpose flour
  • 1 cup unsweetened cocoa powder
  • 2 cups sugar
  • tsp baking powder
  • tsp baking soda
  • 1 tsp salt
  • 1 cup buttermilk
  • 3 eggs, lightly beaten
  • ½ cup canola oil
  • ½ cup boiling water
Whipped Chocolate Ganache
  • 3/4 cup heavy cream
  • 1 Tbsp light corn syrup
  • 8 oz semi-sweet chocolate, chopped
Graham Cracker Crumbles
  • 5 oz graham crackers, 9 full crackers
  • 1/4 cup sugar
  • 1/2 tsp salt
  • 4 oz unsalted butter, (1 stick) melted
Marshmallow Frosting
Chocolate Cake
  1. Preheat oven to 350 degrees and coat 2 - 8 inch round baking pans with non-stick spray. Measure and cut parchment rounds to fit in the bottom of each pan and place in bottom.

  2. Whisk together flour, cocoa powder, sugar, baking powder, baking soda and salt.
  3. Add buttermilk, eggs and oil to the dry ingredients and mix well until combined.
  4. Slowly add in boiling water and mix to combine.
  5. Pour into prepared pans and bake 30 minutes or until a toothpick inserted into the center comes out clean.
  6. Cool cake in pans for about 10 minutes, then remove from pan, peel off the parchment rounds and finish cooling on a wire rack.
Whipped Chocolate Ganache
  1. Heat heavy cream and corn syrup over medium heat until hot, but not boiling.

  2. Place chopped chocolate in a bowl and pour cream mixture over. Let stand for 5 minutes and then stir until blended.
  3. Place bowl in refrigerator for about an hour, stirring occasionally until ganache thickens to a spreadable consistency.
  4. Remove from refrigerator and beat on high until light and fluffy, 3-4 minutes. Cover and reserve.
Graham Cracker Crumbles
  1. Preheat oven to 350 degrees and line a cookie sheet with parchment paper.

  2. Break up graham crackers and place in a food processor and process into fine crumbs. Alternatively place crackers in a large ziplock bag and bash/roll with a rolling pin until fine.
  3. Combine crumbs with sugar, salt and melted butter and push together into about a 12 x 6 inch rectangle (about 1/4 inch thick) on the prepared sheet. Bake for about 12-15 minutes or until golden brown.
  4. Allow to cool and break into pieces.
Marshmallow Frosting
  1. Place all ingredients except marshmallows in a heatproof bowl set over a saucepan of simmering water. Be sure the water does not touch the bottom of the pan.

  2. Beat with an electric mixer until thick and glossy, about 7-8 minutes.
  3. Add in the marshmallows and continue to beat until marshmallows are melted, about 3 mins.
  4. Remove from heat and beat for an additional 2-3 minutes until slightly cooled.
Assemble the Cake
  1. Slice the top off of each cake to create a nice, flat surface.

  2. Divide each cake in half to create four layers.
  3. Place one layer (save your best for the top layer) on a cake plate and top with one half of the whipped ganache and one third of the graham cracker crumbles.
  4. Place another cake layer on top and spread with about 1 1/2 cups of the marshmallow frosting and one third of the graham cracker crumbles.
  5. Top with another layer of cake, remaining whipped ganache and last third of the graham cracker crumbles.
  6. Place the final cake layer on top and spread with the remaining marshmallow frosting. You can use a piping bag fitted with a decorating tip or simply create pretty peaks using a spatula.
  7. Toast the marshmallow icing with the kitchen torch until golden.
Recipe Notes

Special equipment: kitchen torch

Nutrition Facts
S'mores Cake
Amount Per Serving
Calories 749 Calories from Fat 297
% Daily Value*
Fat 33g51%
Saturated Fat 14g88%
Cholesterol 84mg28%
Sodium 696mg30%
Potassium 388mg11%
Carbohydrates 108g36%
Fiber 4g17%
Sugar 77g86%
Protein 8g16%
Vitamin A 555IU11%
Vitamin C 0.1mg0%
Calcium 103mg10%
Iron 3.9mg22%
* Percent Daily Values are based on a 2000 calorie diet.