Gooey S’mores Cookies with Marshmallow

Let’s Talk S’mores Cookies—Honestly, I Make These Way Too Often

So last summer, we tried to do s’mores in the backyard, but the only fire we managed was when my cousin tried to light the old barbecue and almost burned his eyebrows off (he’s fine, just a little singed). After that, I thought—why not just put the whole s’mores thing into a cookie and skip the flames? And that is how I ended up with way too many of these gooey s’mores cookies with marshmallow in my kitchen. Kids loved them. My neighbor “borrowed” some (never returned them). They’re basically the edible equivalent of a cozy hug—minus the smoky hair.

Why You’ll Love This (Or At Least Why I Do)

I make this when I’m craving something sweet but don’t want to deal with sticky fingers—so, most Tuesdays? My family goes a bit loopy for these because you get the gooey marshmallow and melty chocolate all wrapped up in a soft, chewy cookie. (Full disclosure: the first time, my marshmallows kind of exploded; now I’ve got that sorted.)

Also, if you were ever a scout, these will remind you of those campfire nights. Except the only wildlife here is the neighbor’s cat trying to sneak a bite.

What You’ll Need (And What You Can Swap)

  • 1 cup (225g) unsalted butter, room temp (I’ve used salted in a pinch; just skip the extra salt)
  • 1 cup (200g) brown sugar (light or dark, doesn’t matter much)
  • 1/2 cup (100g) white sugar
  • 2 large eggs
  • 1 tsp vanilla extract (I accidentally used almond extract once—it was weird but not bad)
  • 2 1/2 cups (315g) all-purpose flour
  • 1 tsp baking soda
  • 1/2 tsp salt (my grandmother always insisted on Morton’s, but whatever’s in the cupboard works)
  • 1 cup semi-sweet chocolate chips (milk, dark, or even chopped up chocolate bars if that’s what you’ve got)
  • 1 cup mini marshmallows (regular marshmallows, torn up, also sort of work—just messier)
  • 3/4 cup crushed graham crackers (digestive biscuits if you’re in the UK—they’re fine!)

Here’s How I Throw It All Together

  1. Preheat your oven to 350°F (175°C). Line a baking tray with parchment—unless you love chiseling stuck marshmallow off a tray, which, to be fair, is sometimes oddly satisfying.
  2. Cream together the butter and both sugars until it’s light and fluffy—I just use a beat-up hand mixer, but sometimes a wooden spoon if I can’t find the attachments (it takes longer, but hey, arm workout!).
  3. Add the eggs and vanilla. Mix until smooth. If the mixture looks a bit separated, don’t panic; mine usually does, and it always turns out fine in the end.
  4. In a separate bowl, whisk the flour, baking soda, and salt. Add this to the wet stuff in more or less three parts (I get bored and dump it in two—no disasters so far).
  5. Stir in the chocolate chips and graham cracker bits. At this point, I usually sneak a few chips for myself. Optional, but highly recommended.
  6. Now, gently fold in the mini marshmallows. They’ll pop out a bit—that’s fine. If you just toss them in, like I used to, you’ll get gooey pockets; if you want more even marshmallow, push a couple more on top of each dough ball before baking. Learned that the hard way.
  7. Scoop out blobs (about a heaping tablespoon or, honestly, whatever size you like). Space them out—these spread. Trust me.
  8. Bake for 10-12 minutes. When the edges are golden but the centers still look a bit underdone, they’re ready. They’ll firm up as they cool (if you can wait that long, I sure can’t).

Things I’ve Figured Out (The Hard Way)

  • Don’t overmix once the flour is in—it gets a bit tough otherwise, and nobody wants a s’mores brick.
  • Let them cool a few minutes before moving or everything just melts together. Or, you know, eat it with a spoon straight off the tray. No judgment.
  • If you use big marshmallows, cut them up small or you’ll end up with weird craters (which my kids actually love, but still).

Variations (Some Hits, One Miss)

  • Peanut Butter Version: Swap 1/2 cup butter for peanut butter. Gives it a whole thing—nutty, gooey, but sometimes they spread a little too much.
  • Double Chocolate: Replace 1/2 cup flour with cocoa powder. Richer, but maybe a bit much for breakfast (not that it’s stopped me).
  • Gluten-Free? I tried with a 1:1 gluten-free blend and it was… okay. Texture changed, but flavor’s still good.
  • One Flop: I once tried adding caramel bits. They just melted into burnt sugar puddles. Would not recommend, unless you enjoy scrubbing pans.

What You’ll Need (But Here’s a Cheeky Hack)

  • Mixing bowls (a big one, a medium one—if you only have one, just wash it quick and keep going)
  • Hand mixer or a sturdy wooden spoon (I once used a potato masher, not ideal, but it worked)
  • Baking tray and parchment paper—or just grease the tray and hope for the best
  • Cookie scoop or a regular spoon (or clean hands, let’s be honest)
Gooey S’mores Cookies with Marshmallow

Storing These—Though They Rarely Survive

They’ll keep in an airtight container for 2-3 days, but honestly, in my house it never lasts more than a day! If you want them a bit gooier, zap in the microwave for 10 seconds. Or just eat straight from the tray—no shame.

How I Serve ‘Em (Or Sometimes Don’t)

Usually, we pile them up on a plate and just go at it. But for birthdays, I actually sandwich a scoop of vanilla ice cream between two cookies—highly recommend. Also, my aunt dips hers in hot chocolate. I tried it once and wow, that’s a sugar rush.

Pro Tips (Aka What I Learned the Hard Way)

  • I once tried rushing the chilling step (when I’m feeling patient, I’ll chill the dough 30 min). Cookies spread less if you do this—if you don’t, you get more crunch round the edges, which is actually kinda nice.
  • Don’t use wax paper in the oven. Just… don’t. It burns. Learn form my mistake.
  • On second thought, the more marshmallows on top, the gooier, but also the messier. Balance, right?

Real Questions I’ve Gotten (And a Few I Asked Myself)

Can I freeze the dough?
Yep, totally. Roll into balls and freeze. Bake straight from frozen, just add a minute or two. (I try to remember, but half the time I just eat the dough—salmonella be damned.)
What if I don’t have graham crackers?
Use digestive biscuits or even plain old vanilla wafers. It’s not quite the same, but still delicious. Ritz crackers… don’t ask. Too salty.
Can I use vegan marshmallows?
Sure thing. I’ve tried Dandies (here), they melt a bit differently, but taste is spot on. Oh, and check out this DIY vegan marshmallow recipe if you’re feeling adventurous.
Do I have to use a mixer?
Nope, honestly, a wooden spoon and a bit of elbow grease work. I’ve even used a spatula when everything else was mysteriously missing. (Still don’t know where my whisks go…)
Why are my cookies flat?
Could be soft butter, could be not enough flour. Or maybe you didn’t chill the dough. Actually, sometimes I like them flatter—they get really chewy round the edges. It’s all good.

And before I forget, if you want to up your baking game, I sometimes browse Serious Eats—they go deep on cookie science, but honestly, sometimes it’s just about making something tasty and sharing it. Even if it looks a bit silly.

So there you have it—gooey s’mores cookies with marshmallow, with all the bumps and detours along the way. No campfire required, but bonus points if you wear flannel while you bake.

★★★★★ 4.80 from 98 ratings

Gooey S’mores Cookies with Marshmallow

yield: 18 cookies
prep: 20 mins
cook: 12 mins
total: 32 mins
These Gooey S’mores Cookies with Marshmallow combine all the classic flavors of s’mores—graham crackers, chocolate, and toasted marshmallow—into a soft, chewy cookie. Perfect for dessert or a sweet snack, these cookies are sure to be a family favorite.
Gooey S’mores Cookies with Marshmallow

Ingredients

  • 1 1/2 cups all-purpose flour
  • 1 cup graham cracker crumbs
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup unsalted butter, softened
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar, packed
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup semi-sweet chocolate chips
  • 1 cup mini marshmallows

Instructions

  1. 1
    Preheat the oven to 350°F (175°C) and line two baking sheets with parchment paper.
  2. 2
    In a medium bowl, whisk together the flour, graham cracker crumbs, baking soda, and salt.
  3. 3
    In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy. Beat in the egg and vanilla extract.
  4. 4
    Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the chocolate chips and mini marshmallows.
  5. 5
    Scoop tablespoon-sized balls of dough onto the prepared baking sheets, spacing them about 2 inches apart.
  6. 6
    Bake for 10-12 minutes, or until the edges are golden and the centers are set but still gooey. Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack.
CLICK FOR NUTRITION INFO

Approximate Information for One Serving

Serving Size: 1 serving
Calories: 160 caloriescal
Protein: 2gg
Fat: 7gg
Saturated Fat: 0g
Trans Fat: 0g
Cholesterol: 0mg
Sodium: 0mg
Potassium: 0mg
Total Carbs: 23gg
Fiber: 0g
Sugar: 0g
Net Carbs: 0g
Vitamin A: 0
Vitamin C: 0mg
Calcium: 0mg
Iron: 0mg

Nutrition Disclaimers

Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.

Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.

To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

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