This is the recipe for you if you want a warm, gooey s'mores cookie with a hidden marshmallow center that's done in 12 minutes - no cast iron, no special equipment, just one bowl and a baking sheet.
Marshmallows baked on top of cookie dough don't work. I know because I tried it: they puff up within the first few minutes, caramelize fast, and are fully gone - reduced to a thin sticky film - long before the dough underneath has set. I'm going to save you time on this: place the marshmallows in the bottom of the crust first, then press the dough on top. Insulated from direct oven heat, they melt slowly and stay intact, leaving a gooey molten pocket in the center of the finished cookie instead of burning off the surface.
The mini graham cracker crust handles everything the cast iron pan does in a traditional skillet cookie - it's rigid enough to contain the dough, conducts heat evenly from the bottom up, and produces a crispy, structured base - while also adding the graham cracker flavor that makes this a s'mores cookie rather than just a cookie in a tin. The edges set and crisp while the center stays soft and fudgy, and because each cookie bakes as its own individual portion, there's no slicing involved and no uneven distribution of the gooey center. Start to finish, they're done in under 30 minutes.
What I love most about this recipe is how well it fits into a real weeknight or last-minute situation. The dough comes together in about 15 minutes, the marshmallows and crusts are usually sitting in my pantry already, and because each cookie is its own individual portion, there's no slicing or serving drama - you just pull them out of the oven, drop a handful of extra chocolate chips on top while they're still hot, and let everyone add their own scoop of vanilla ice cream. They taste like a warm chocolate chip cookie and a s'more had a very good idea together, and they disappear fast every single time I make them.
If you want the some campfire S'mores but in a completely different format, my S'mores Stuffed Cookies uses a freeze-first technique to keep a full marshmallow, chocolate, and graham cracker center locked inside a brown sugar cookie. And if you're going all-in on a s'mores, the S'mores Cheesecake layers toasted marshmallows and ganache into a no-bake filling on a graham cracker base.
Why I Stopped Using a Cast Iron Pan for Skillet Cookies
The graham cracker crust does the job of the pan
The whole reason most skillet cookie recipes call for cast iron is that you need something with thick, heat-retaining walls to give you a crispy bottom and structured edge while the center stays soft. A mini graham cracker pie crust does exactly the same thing - it's rigid enough to hold the dough, conducts heat evenly from the bottom up, and gives you that crispy, buttery base without any preheating, seasoning, or heavy pans to haul out. The bonus is that the crust adds an actual flavor layer that cast iron obviously can't, which is what pushes this from "skillet cookie" into S'mores Stuffed Cookie territory.
Marshmallows under the dough, not on top - here's why
I tried the obvious version first: marshmallows pressed into the top of the dough before baking. They puffed up immediately, browned way too fast, and were completely gone - caramelized into a thin, sticky film - by the time the cookie dough underneath was even close to set. Moving them to the bottom of the crust before adding the dough was the fix. Underneath the dough, they're insulated from the direct oven heat, so they melt slowly and stay soft all the way through the bake. When you scoop into the finished cookie, that hidden pocket of melted marshmallow is still there in the center instead of having burned off on the surface.
The Underbaked Center Is the Whole Point
I pull these at 12 minutes when the edges are set and lightly golden but the center still looks a little soft and shiny - and that's exactly right. The residual heat from the crust and the dough carries the center the rest of the way as it sits on the pan for a minute or two, and what you're left with is a warm, fudgy middle that's closer to a molten cookie than a fully baked one. If you bake these until the center looks completely done in the oven, they'll be overbaked and dry by the time they hit the table. Trust the timer, not the look of the top.
Ingredients and What Each One Does
Cookie dough ingredients
- Salted butter, softened - I use salted butter on purpose because the extra salt sharpens the chocolate flavor without any extra measuring, and it needs to be genuinely soft so the sugar creams in and the dough holds its shape inside the crust.
- Brown sugar - This is what gives the center that chewy, caramel-leaning pull I'm always after, and keeping more brown than white is what holds the middle soft even after the cookies cool down.
- Granulated white sugar - This works with the brown sugar to crisp the edges and give the top that slightly crackly finish you lose if you skip it entirely.
- Large egg - One room-temperature egg binds the dough and gives it just enough structure to sit on top of the marshmallows without sinking straight through them during the bake.
- All-purpose flour - The backbone of the dough; I spoon it into the measuring cup and level it off so the cookies aren't too dense to bake through in 12 minutes.
- Baking powder and baking soda - I use both because baking soda handles spread and browning while baking powder gives the dough just enough lift so it doesn't bake up flat inside the crust.
- Semi-sweet chocolate chips - My go-to here because the slight bitterness balances out how sweet the graham cracker crust and marshmallows already are, and I fold them in last so they stay whole and melty.
S'mores assembly: crusts and marshmallows
- Mini graham cracker pie crusts - These act as the pan, the structure, and the s'mores flavor layer all at once, and I grab them off the baking aisle at any major grocery store with zero prep required.
- Mini marshmallows - I put these in the bottom of the crust before the dough goes on top so they melt into a hidden gooey pocket in the center instead of burning off on the surface.
Optional toppings that make a difference
- Extra semi-sweet chocolate chips - I drop a handful onto each cookie straight out of the oven so they soften into the top, and it's the finishing move that makes these look and taste intentional.
- Vanilla ice cream - Cold ice cream melting into a hot gooey center is the whole point of a skillet-style dessert, and I never skip it when I'm making these for people.
How to Make S'mores Skillet Cookies
1. Make the cookie dough
I start by creaming the softened butter with both sugars for a full two minutes - not just until combined, but until the mixture looks noticeably lighter and feels smooth when you scrape the bowl. That extra creaming time is what gives the cookies a slightly lifted, structured edge instead of spreading flat inside the crust.
Once the egg is in and fully incorporated, I slow the mixer down before adding the dry ingredients so I don't overwork the flour and end up with a tough dough; I stop mixing the moment I don't see dry streaks, then fold the chocolate chips in by hand. The dough here is a close cousin to my Almond Flour Chocolate Chip Cookies in terms of texture goal - soft center, slightly crisp edge - if you need a gluten-free version and want a tested starting point for adapting this one.
2. Layer the marshmallows and dough into the crusts
Before the dough goes anywhere near the crusts, I line all six up on a baking sheet so I'm not moving them around once they're loaded and fragile. A small handful of mini marshmallows goes into the bottom of each crust first - just enough to cover the base without piling up - and then I press a generous ball of dough on top, pushing it down gently so it fills the crust walls and makes contact with the marshmallows underneath. The dough should come close to the top edge of the crust but not spill over; if it's mounded too high it'll push out during the bake and you'll lose the contained skillet-cookie shape that makes these work.
3. Bake and finish with chocolate chips
Twelve minutes at 350°F is the number I always come back to, and I pull them when the edges look set and lightly golden but the center still has a soft, slightly underdone shine to it - that's exactly right, not a mistake. They'll carry over as they sit on the pan for a minute or two, and that's when I scatter the extra chocolate chips on top so the residual heat from the surface softens them just enough without fully melting them into a puddle. Let them sit for another minute before serving so the marshmallow pocket in the center has a chance to settle, then get the ice cream ready.
S'mores Skillet Cookies in Graham Cracker Crusts
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Equipment
- large mixing bowl
- electric hand mixer
- Measuring cups and measuring spoons
- 6 mini graham cracker pie crusts (aluminum tins)
- baking sheet
Ingredients
Cookie Dough
- ½ cup salted butter softened
- ½ cup brown sugar packed
- ½ cup granulated white sugar
- 1 large egg
- 1½ cups all-purpose flour
- ¾ teaspoon baking powder
- ½ teaspoon baking soda
- 1½ cups semi-sweet chocolate chips
S'mores Assembly
- 6 mini graham cracker pie crusts
- 1 cup mini marshmallows
Optional Topping
- Extra handful of semi-sweet chocolate chips for topping straight out of the oven
- Vanilla ice cream for serving
Instructions
- Preheat your oven to 350°F and place all six mini graham cracker pie crusts on a baking sheet.
- In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar together with an electric hand mixer on high speed for about 2 minutes, until smooth and creamy.
- Add the egg and mix until fully incorporated. Reduce the mixer speed and gently mix in the flour, baking powder, and baking soda until just combined.
- Fold the chocolate chips into the cookie dough with a spatula.
- Add a small handful of mini marshmallows to the bottom of each pie crust. Top each one with a large ball of cookie dough, pressing it down gently to fill the crust.
- Bake for 12 minutes, until the edges are set and lightly golden but the center still looks slightly underbaked.
- Remove from the oven and immediately top with an extra handful of chocolate chips if desired. Serve straight from the oven with a scoop of vanilla ice cream.
Tips for Getting These Right Every Time
How to tell when they're done (they should still look underbaked)
The most common mistake with these is leaving them in until the center looks fully set, which by that point means they're already overbaked. What I'm looking for at 12 minutes is a edge that's lightly golden and firm when you gently nudge the pan, and a center that still looks soft, shiny, and slightly underdone - almost like it needs two more minutes. It doesn't. The crust holds residual heat and the dough keeps cooking off the oven for another minute or two on the pan, and that carryover is what takes the center from raw to that perfect fudgy, gooey middle without drying it out.
Why I drop extra chocolate chips on right out of the oven
This isn't just a looks thing, although it does make them look significantly better. When the cookies come straight out of the oven, the surface is hot enough to soften a fresh handful of chocolate chips without fully melting them, so they sit on top with that just-melted, slightly glossy look that makes people assume you did something more complicated than you did. It also adds a concentrated hit of chocolate right on the surface so the first bite leads with chocolate before you get to the marshmallow center - which is exactly the right order for a s'mores-style dessert.
The best way to serve and reheat leftovers
These are at their best within the first five minutes out of the oven, so I time the bake to finish right when I'm ready to serve. If I have leftovers, I store them at room temperature in an airtight container for up to five days, but I always pop them out of the aluminum tin before reheating - the tin gets too hot in the microwave and the bottom of the crust can scorch before the center warms through. Fifteen to twenty seconds in the microwave without the tin gets the center soft and gooey again without overdoing it, and a fresh scoop of ice cream on top makes a leftover cookie taste almost as good as a fresh one. If you're already pulling out the baking sheet, my Salted Caramel Frosted Cookies and Strawberry Crinkle Cookies both use a similarly forgiving one-bowl dough and bake at the same temperature, so you can run both on the same day without resetting your kitchen.
Variations and Substitutions
Jumbo vs. mini marshmallows - does it matter?
It does, but not in the way you'd expect. Mini marshmallows spread out evenly across the bottom of the crust and melt into a fairly uniform gooey layer, which means you get that hidden pocket distributed throughout the center of every bite. One or two jumbo marshmallows work fine as a swap - I've done it - but they tend to create one concentrated molten spot in the middle rather than an even layer, and they release more moisture as they melt so the very bottom of the cookie can turn slightly soft. Either version works; mini marshmallows just give you a more consistent result across all six cookies.
Swapping semi-sweet chocolate for milk or dark
Milk chocolate chips make these noticeably sweeter, which isn't a problem on its own but can tip the whole cookie into cloying territory when you factor in the graham cracker crust and marshmallows already doing a lot of sweetness work. I'd use milk chocolate if I'm making these for kids or anyone who finds semi-sweet too intense, but I'd also cut the granulated sugar back slightly to compensate. Dark chocolate - anything in the 60-70% range - is actually my favorite swap when I want the s'mores flavor to taste a little more grown-up and complex; the bitterness plays really well against the sweet marshmallow center. If you want to take the chocolate element further, the dough base here works with the same ratio of mix-ins as my Double Chocolate Buckwheat Flour Cookies - swap a portion of the chocolate chips for cocoa powder-dusted chunks and the center gets noticeably richer and more fudgy.
Adding a peanut butter swirl or Nutella layer
A thin smear of peanut butter or Nutella on the bottom of the crust before the marshmallows go in is a small addition that pays off significantly. For peanut butter, I use creamy rather than natural so it doesn't separate during the bake and leave an oily puddle at the bottom. Nutella works the same way and essentially turns these into a s'mores-Nutella hybrid that's hard to argue with. Either way, keep the layer thin - about a teaspoon per crust - because too much adds enough fat and moisture to throw off the bake time and make the bottom of the crust soggy instead of crispy.
If these are going out as part of a dessert spread, the S'mores Martini - chocolate, marshmallow, and a graham cracker rim - takes two minutes to make and gives adults something to hold while the cookies are still in the oven
Frequently Asked Questions
Can I make the cookie dough ahead of time?
Yes - I make the dough up to 48 hours ahead, press it into a disk, wrap it tightly, and keep it in the fridge. When I'm ready to bake, I let it sit at room temperature for about 15 minutes so it softens enough to scoop and press into the crusts without cracking the graham cracker walls.
Why did my marshmallows disappear completely during baking?
They didn't disappear - they melted into the dough, which is exactly what's supposed to happen. If you're not getting that gooey pocket in the center, the most likely fix is using more marshmallows; a thin single layer sometimes gets fully absorbed. I aim for enough mini marshmallows to cover the entire bottom of the crust in a slightly overlapping layer.
Can I use homemade graham cracker crusts instead of store-bought?
You can, but the store-bought aluminum tins are doing real structural work here - they hold their shape in the oven and make the cookies easy to serve individually without falling apart. A homemade crust pressed into a muffin tin works as a substitute, but I'd press it firmly and chill it for 15 minutes before loading it so it doesn't crumble when you add the dough.
My cookies came out dry. What went wrong?
Almost always overbaking. These need to come out when the center still looks underdone and shiny - if the top looks fully set and matte in the oven, they've already gone too far. Every oven runs slightly differently, so I'd start checking at 10 minutes the first time you make these and pull them the moment the edges feel firm but the center still has some give.
Can I double the recipe?
Easily - the dough scales up without any issues and the only limit is how many mini graham cracker crusts you have on hand. The crusts are usually sold in packs of 6, so I grab two packs when I'm making these for a crowd and bake both sheets at the same time on separate racks, rotating halfway through so they brown evenly.
More Cookie Recipes You'll Love
- Crumbl‑Style Biscoff Lava Cookies with Gooey Cookie Butter Center - Thick, bakery-style cookies with a hidden pool of melted cookie butter in the center that delivers the same hidden-pocket gooeyness as these s'mores skillet cookies - just with Biscoff instead of marshmallow.
- Oreo Chocolate Chip Cookies - Classic chocolate chip cookie dough loaded with crushed Oreo pieces that bake into soft, chewy cookies with crispy cookie bits and pockets of melted chocolate throughout.
- Biscoff Chocolate Chip Cookies - Soft, chewy cookies made with Biscoff cookie butter and dark chocolate chunks that give you a caramelized, spiced edge in every bite.
- No Bake Avalanche Cookies - Peanut butter, white chocolate, and Rice Krispies come together in a no-bake drop cookie that sets up firm on the outside with a chewy, crispy center and zero oven time required.
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