Cinnamon Graham S’more Cupcakes for a Cozy Indoor Treat

Cinnamon Graham S’more Cupcakes bring the campfire flavor inside, without needing a fire pit or a bag of skewers. You get a soft graham cupcake with a little cinnamon warmth, a marshmallow center tucked inside, and chocolate frosting on top.

This is a small batch recipe, just 6 cupcakes, which I like because it feels special without leaving a whole tray sitting on the counter. The steps are simple, but the marshmallow filling needs a little patience.

What Makes These Cinnamon Graham S’more Cupcakes Work

A regular s’more is all about contrast: crisp graham cracker, soft marshmallow, and melted chocolate. These cupcakes keep those same flavors, just in a softer dessert.

The graham cracker crumbs go right into the cupcake batter, so the flavor isn’t only sitting on top as decoration. A little cinnamon gives the cupcake base a warmer taste and makes the graham flavor stand out more. Not too much. Just enough to notice.

The marshmallow filling is piped into the center after baking, which keeps it fluffy instead of disappearing into the batter. Then the chocolate frosting does the job of the chocolate bar. It’s rich, smooth, and easy to spread or pipe.

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Ingredients for Cupcakes, Marshmallow Filling, and Chocolate Frosting

For the cupcake base, you’ll need unsalted butter, granulated sugar, 1 large egg, vanilla extract, cinnamon, salt, baking powder, all-purpose flour, graham cracker crumbs, and milk. The batter is made like a basic butter cupcake: cream the butter and sugar first, then add the egg and vanilla before mixing in the dry ingredients and milk.

The marshmallow filling uses 1 large egg white, granulated sugar, and cream of tartar. Cream of tartar helps the egg white whip up more steadily, especially after it has been warmed over simmering water.

For the frosting, keep it simple: butter, powdered sugar, cocoa powder, vanilla, and enough milk to loosen it. Sifting the powdered sugar and cocoa helps avoid little dry pockets in the frosting. Worth the extra minute.

Tools That Make the Small Batch Easier

A standard cupcake pan works fine here, even though you’re only filling 6 liners. I usually space the liners out if the pan allows it, but it’s not a fussy recipe.

A stand mixer makes the batter and frosting easier, but a hand mixer can handle both. For the marshmallow filling, a mixer is more important because you need to beat the warm egg white mixture until stiff peaks form. Doing that by hand would take patience most of us don’t have on cupcake day.

You’ll also want a heatproof bowl, a small saucepan for simmering water, a sharp knife for hollowing the cupcakes, and a piping bag. No piping bag? A sturdy plastic bag with the corner snipped works. Not fancy, but it gets the filling where it needs to go.

How to Bake and Fill Cinnamon Graham S’more Cupcakes

Mixing and Baking the Cupcakes

Start by heating the oven to 350°F and lining a cupcake pan with 6 liners. Cream the butter and sugar until the mixture looks lighter and smoother. This step gives the cupcakes a better texture, so don’t rush it too much.

Mix in the egg and vanilla, scraping the bowl as needed. Butter likes to cling to the sides, and if it stays there, the batter won’t mix evenly. Add the dry cupcake ingredients next, including the flour, graham cracker crumbs, cinnamon, salt, and baking powder. Once those are mostly incorporated, pour in the milk slowly and mix just until the batter looks smooth with no streaks.

Use a large cookie scoop to divide the batter evenly. Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean. Let the cupcakes sit in the pan for 5 minutes, then move them to a wire rack so they can cool completely before filling.

Making the Marshmallow Filling

The marshmallow filling starts over simmering water, not direct heat. Add the egg white, sugar, and cream of tartar to a heatproof bowl set over a saucepan of gently simmering water. The bowl shouldn’t touch the water. You want steam heat, not boiling water cooking the egg too quickly.

Whisk until the sugar dissolves and the mixture feels warm to the touch. Rub a tiny bit between your fingers if needed; it should feel smooth, not gritty. Then remove the bowl from the heat and beat the mixture until stiff peaks form. Add the vanilla in the last 30 seconds so the flavor stays fresh.

Filling and Frosting the Cupcakes

Once the cupcakes are fully cool, use a sharp knife to cut out a small center from each one. Don’t cut all the way to the bottom. Leave enough cupcake underneath to hold the marshmallow filling in place.

Pipe the marshmallow into the hollowed centers. It’s okay if it rises slightly above the top; the frosting will cover it.

For the chocolate frosting, cream 4 tablespoons of butter, then mix in the sifted powdered sugar and cocoa powder. Add vanilla and enough milk to reach the texture you want. For piping, keep it a little thicker. For spreading with a knife, add milk slowly until it softens. Frost the cupcakes right away so the buttercream stays smooth and easy to work with.

Notes, Serving Size, and Nutrition Estimate

This recipe makes 6 cupcakes, which is a nice size when you want dessert without committing to a full dozen. Each cupcake has three parts: the cinnamon graham cupcake, marshmallow filling, and chocolate buttercream. Because of that, they feel a little richer than a plain cupcake.

The nutrition will vary depending on how much frosting you pipe onto each one, but one cupcake is roughly 520-560 calories. That estimate includes the butter, sugar, powdered sugar, cocoa, milk, graham crumbs, and marshmallow filling divided across 6 servings.

For the cleanest texture, serve these the same day they’re filled and frosted. If you need to make them ahead, bake the cupcakes first, cool them completely, and fill and frost closer to serving.

A Small Batch Worth Making Again

Cinnamon Graham S’more Cupcakes are the kind of dessert I like for a quiet weekend, a summer dinner indoors, or those days when a campfire just isn’t happening. The graham crumbs and cinnamon carry the flavor, the marshmallow center gives you that soft s’mores bite, and the chocolate frosting brings it all together.

Make the batch once as written, then adjust the frosting or filling next time to fit your table. That’s how good home recipes grow.

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