S’more Cupcakes Recipe

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Master the ultimate S'more Cupcakes featuring a toasted graham cracker crust, a rich chocolate cake base, and a stable, toasted marshmallow meringue frosting.

S’more Cupcakes Recipe
Why This Recipe Works:
  • A pre-baked graham cracker crust provides structural integrity and a distinct textural contrast to the soft cake.
  • The chocolate cake utilizes hot water to bloom the cocoa powder, maximizing flavor extraction and ensuring a moist crumb.
  • Swiss meringue serves as the marshmallow frosting, offering superior stability and a perfect surface for torching without collapsing.

The secret to a perfect s'more cupcake lies in balancing three distinct textures: a crunchy graham cracker base, a tender chocolate crumb, and a billowy, toasted marshmallow topping. Many recipes fail because the graham cracker crust turns soggy or the marshmallow frosting deflates within hours of assembly. This formula solves those issues by pre-baking the crust to seal out moisture and utilizing a chemically stable Swiss meringue.

To achieve a deeply chocolate flavor, we employ a technique known as blooming, where boiling water is poured over cocoa powder to dissolve the solids and release trapped volatile flavor compounds. This process hydrates the starch molecules in the cocoa, which helps create a more cohesive protein matrix during baking. Additionally, using oil instead of butter keeps the cake exceptionally moist because liquid fats remain fluid at room temperature, preventing the crumb from drying out. If you enjoy this deep cocoa profile, you might also appreciate our technique for Double Chocolate Fudge Cookies.

The frosting relies on thermal protein denaturation.

By heating egg whites and sugar to 160°F (71°C) before whipping, we dissolve the sugar crystals completely and partially unravel the egg proteins. This creates a highly stable foam that mimics marshmallow fluff but maintains its structure under the high heat of a kitchen torch.

When assembling, ensure the chocolate cupcakes are completely cooled to room temperature before applying the meringue. Applying frosting to a warm cake will cause the fat in the cake to melt the delicate protein-air structure of the meringue, leading to a collapsed topping. For those interested in other structured baked goods, mastering the base of a classic White Cake Recipe provides excellent foundational practice in cake chemistry.

If you prefer a bar format that combines rich chocolate with a crunchy base, consider making our Peanut Butter Chocolate Bars. This alternative offers a similar textural contrast with less active prep time.

S’more Cupcakes Recipe

  • Cuisine American
  • Category Dessert, Cupcakes
  • Prep Time
  • Cook Time
  • Servings 12 cupcakes
  • Calories 340 calories
  • Rating 4.8 3785
  • Tags S'mores, Chocolate Cupcakes, Swiss Meringue, Graham Cracker Crust, Baking Science

Ingredients

  • 1 cup (100g) graham cracker crumbs
  • 2 tbsp (25g) granulated sugar
  • 3 tbsp (42g) unsalted butter, melted
  • 1 cup (120g) King Arthur all-purpose flour
  • 1 cup (200g) granulated sugar
  • 1/2 cup (42g) Dutch-process cocoa powder
  • 1 tsp Rumford baking powder
  • 1/2 tsp baking soda
  • 1/2 tsp Diamond Crystal kosher salt
  • 1 large egg, room temperature
  • 1/2 cup (120ml) whole milk
  • 1/4 cup (60ml) canola oil
  • 1/2 cup (120ml) boiling water
  • 4 large egg whites (120g)
  • 1 cup (200g) granulated sugar
  • 1/4 tsp cream of tartar
  • 1 tsp pure vanilla extract

Directions

  1. Preheat the oven to 350°F (177°C) and line a 12-cup muffin tin with paper liners.
  2. Combine graham cracker crumbs, sugar, and melted butter in a bowl, then press 1 tablespoon of the mixture firmly into the bottom of each liner.
  3. Bake the crusts for 5 minutes to set, then remove from the oven and let cool while preparing the batter.
  4. Whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt in a large bowl.
  5. Add the egg, milk, and canola oil, whisking until smooth, then slowly stream in the boiling water while whisking continuously to bloom the cocoa.
  6. Divide the thin batter evenly among the 12 cups, filling each about two-thirds full over the baked crusts.
  7. Bake for 16 to 18 minutes, or until a toothpick inserted into the center of a cupcake comes out clean.
  8. Transfer the cupcakes to a wire rack to cool completely before frosting.
  9. Make the frosting by combining egg whites, sugar, and cream of tartar in a heatproof bowl set over a pot of simmering water, whisking constantly until the mixture reaches 160°F (71°C) and the sugar is dissolved.
  10. Remove from heat and whip with a stand mixer fitted with a whisk attachment on high speed for 8 to 10 minutes until stiff, glossy peaks form, then fold in the vanilla.
  11. Pipe the meringue onto the cooled cupcakes and use a kitchen torch to gently brown the edges of the frosting.

Notes

Adhering to precise temperatures and ingredient weights guarantees the structural success of these multi-textured cupcakes.

  • Use Diamond Crystal kosher salt; if substituting Morton's kosher salt, reduce the volume by half (use 1/4 teaspoon) to avoid over-salting the chocolate batter.
  • Cream of tartar acts as an acid that lowers the pH of the egg whites, which prevents the egg proteins from bonding too tightly and ensures a flexible, stable meringue that won't weep.
  • If you skip wiping your mixing bowl and whisk with lemon juice or white vinegar before whipping the meringue, residual fat molecules will prevent the egg proteins from trapping air. Prevent this by thoroughly degreasing all equipment.
  • After 24 hours in the refrigerator, the graham cracker crust will begin to absorb moisture from the cake, losing its crisp texture, while the meringue frosting may slightly contract.
  • If you do not own a kitchen torch, you can brown the frosted cupcakes under an oven broiler set to high for 30 to 60 seconds, but watch them constantly to prevent the paper liners from catching fire.

Serving Suggestions

Serve these cupcakes at room temperature to maintain the soft texture of both the cake and the meringue. Pair them with elements that contrast the sweet, rich profile of chocolate and toasted sugar.

  • A side of fresh raspberries or a drizzle of raspberry coulis (the sharp acidity cuts through the sweet marshmallow meringue).
  • A cold glass of unsweetened almond milk (cleanses the palate between rich bites of chocolate).
  • A dusting of smoked sea salt over the toasted meringue (enhances the campfire-inspired smoky flavor profile).
  • A strong espresso or dark roast coffee (bitter notes balance the high sugar content of the meringue).

Storage and Reheating

Store unfrosted cupcakes in an airtight container at room temperature for up to 3 days. Once frosted with the Swiss meringue, they must be stored in a sealed container in the refrigerator for no more than 2 days. This cold storage prevents the meringue from absorbing excess moisture and weeping.

Unfrosted cupcakes freeze exceptionally well for up to two months when wrapped tightly in plastic. Do not freeze the meringue frosting, as thawing destroys the delicate emulsion and causes severe weeping.

To restore the cake's optimal crumb texture after refrigeration, bring the cupcakes to room temperature for 30 minutes before serving.

If you must warm an unfrosted cupcake quickly, microwave it on medium power for 10 to 15 seconds. This softens the fats in the crumb without drying out the edges.

You can bake the graham cracker crusts and chocolate cakes 1 day in advance. Keep them covered at room temperature, then prepare and torch the Swiss meringue frosting just before serving for the best texture.

Ingredient Substitutes

While the chemistry of this recipe is precise, you can make several successful ingredient substitutions with the correct adjustments.

  1. Dutch-process cocoa powder to Natural cocoa powder: Substitute 1:1 by volume, but add 1/8 teaspoon of baking soda to neutralize the higher acidity of the natural cocoa.
  2. Canola oil to Melted coconut oil: Substitute 1:1 by volume, but ensure all other liquid ingredients are at room temperature to prevent the coconut oil from solidifying during mixing.
  3. Graham cracker crumbs to Gluten-free cookie crumbs: Substitute 1:1 by weight (100g) and increase the melted butter by 1/2 tablespoon to account for the higher absorption rate of gluten-free starches. For another dessert utilizing a crushed cookie base, see our guide on the Strawberry Cheesecake Cookie.
  4. Whole milk to Oat milk: Substitute 1:1 by volume; choose an unsweetened, full-fat oat milk to maintain the fat-to-protein ratio necessary for a tender crumb.

These cupcakes deliver the nostalgic flavors of a campfire classic with professional-grade execution. By mastering the science of cocoa blooming and Swiss meringue stabilization, you ensure a reliable, crowd-pleasing dessert. Focus on temperature control and precise measurements for a flawless result every time.

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