Dessert

S’mores Cake Recipe

ByZoe Lane January 5, 2026January 5, 2026

Introduction

This s’mores cake is a delightful twist on the classic campfire treat, layering rich graham cracker dough, melted chocolate, and fluffy marshmallows into a gooey, irresistible dessert. Perfect for gatherings or a cozy night in, it combines familiar flavors in a satisfying cake form.

A square piece of layered dessert sits on a white plate, placed on a white marbled surface. The bottom layer is a crumbly golden crust, topped by a thick, smooth pale yellow layer. Above this is a rich, creamy chocolate layer that looks dense and dark brown. The top layer is a fluffy white meringue or whipped topping, lightly browned on the peaks. The edges of the dessert show all the layers clearly. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1 cup unsalted butter, softened
1/2 cup brown sugar
1 cup granulated sugar
2 eggs
2 teaspoons pure vanilla extract
2 2/3 cups all-purpose flour
3/4 teaspoon kosher salt
1 1/2 cups graham cracker crumbs
4 XL Hershey bars (4.4 ounce size each)
16 ounces marshmallow fluff

Instructions

Step 1: Preheat your oven to 350°F (175°C). In a large mixing bowl, beat the softened butter with both the brown and granulated sugars until creamy and well combined.
Step 2: Add the eggs one at a time, mixing well after each addition, then incorporate the vanilla extract. Continue beating until the mixture is light and fluffy.
Step 3: In a separate bowl, combine the all-purpose flour, kosher salt, and graham cracker crumbs thoroughly.
Step 4: Gradually add the dry ingredients to the butter mixture, mixing until a consistent dough forms.
Step 5: Divide the dough in half. Press one half evenly into the bottom of a greased 9×13-inch baking dish to form the base layer.
Step 6: Arrange three whole Hershey bars side by side over the dough layer. Cut the remaining bar into four lengthwise strips and place them in the gaps to cover the entire surface evenly.
Step 7: Spread the entire 16-ounce jar of marshmallow fluff evenly over the chocolate layer, fully covering it.
Step 8: Crumble the remaining half of the dough into small pieces and sprinkle them over the marshmallow layer. Gently press the crumbles to help them adhere.
Step 9: Bake uncovered on the center rack for 30 to 35 minutes, or until the top is golden brown and puffed.
Step 10: Let the cake cool completely before slicing into 16 pieces to allow the layers to set for easier serving.

Tips & Variations

For extra gooeyness, warm the marshmallow fluff slightly before spreading to make it easier to spread.
Substitute the Hershey bars with your favorite chocolate bar for a personalized twist on the chocolate layer.
Sprinkle a pinch of sea salt over the top before baking to enhance the sweetness and add a subtle contrast.
If you prefer a crunchier topping, add chopped nuts like pecans or almonds on top of the marshmallow layer before adding the dough crumbles.

Storage

Store any leftover cake in an airtight container at room temperature for up to 3 days. For longer storage, keep it refrigerated for up to a week. Reheat individual slices in the microwave for about 15 seconds to soften the marshmallow layer before serving.

How to Serve

A square slice of a layered dessert sits on a white plate against a white marbled surface background. The bottom layer is a crumbly golden crust, topped by a smooth pale yellow custard layer. Above the custard is a thick, rich chocolate layer with a glossy texture. The top layer is a fluffy white marshmallow-like topping, slightly toasted brown on top with uneven peaks and a soft texture. The slice shows clear distinct layers with a slightly rough edge. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular marshmallows instead of marshmallow fluff?

Regular marshmallows can work but may not spread as evenly as marshmallow fluff. Toasting and melting them slightly before spreading can help create a similar texture.

Is it necessary to use graham cracker crumbs in the dough?

Graham cracker crumbs add the signature s’mores flavor and texture, but you can substitute with crushed digestive biscuits or vanilla wafers if needed, keeping in mind it will alter the taste slightly.