S'mores Cold Brew {Starbucks Copycat}

This Starbucks S'mores Cold Brew copycat has toasted marshmallow flavor, a chocolate drizzle, and a graham cracker crumbs on top. It tastes just like the coffee shop version is sure to be your favorite summer iced coffee!

Jump to:

• ❤️Why this recipe works
• 🗒 Ingredients
• ☕️ Recipe tips
• 🎉 Variations on recipe
• 🧋 More summer cold brew recipes
• 📖 Recipe
• 💬 Comments

S'mores is back at Starbucks!! Cue the summer joy!

I'm not exaggerating when I say s'mores might be my favorite flavor combination of all time. Especially when coffee is involved. Marshmallow, chocolate, and graham crackers make for the best flavor combination ever.

So when Starbucks brought back their S'mores Frappuccino in early July 2026 and introduced a brand new S'mores Cold Brew and S'mores Chai alongside it, I knew I had to get copycat versions up immediately.

This Cold Brew starts with my homemade marshmallow syrup (you can use store-bought if you prefer), gets topped with a sweet marshmallow cold foam, and is finished with a chocolate drizzle and graham cracker crumbs.

❤️Why this recipe works

It actually tastes like a s'mores: my favorite thing about this cold brew is that it tastes just like a s'more and just like the version you get at Starbucks. With marshmallow, chocolate, and graham cracker flavors, it basically screams summer.

The marshmallow syrup is made with real marshmallow fluff: I tested this recipe a lot and landed on toasting the sugar a bit, adding plenty of vanilla extract, and incorporating real marshmallow fluff for the full marshmallow flavor profile.

Most ingredients can be purchased or made from scratch: you can definitely purchase a bottle of marshmallow syrup and you can also purchase a bottle of cold brew instead of making your own. But I also show you how to make marshmallow syrup and you can follow your own fave cold brew method if you want. I also purchase the milk chocolate for drizzling, but it can be homemade, too.

It's easy to customize: like most drinks at Starbucks, this one is super easy to make your own. When you make it at home, you're free to add all kinds of ingredients to it, though chances are high you'll want to drink this one exactly as it's made!

🗒 Ingredients

Here's everything you need to make the Starbucks S'mores Cold Brew:

• Cold brew: you can brew your own cold brew or use Starbucks cold brew concentrate or another brand cold brew. If you don't have cold brew, you can use the iced coffee of your choice.
• Ice
• Marshmallow syrup: you can use a store-bought marshmallow syrup or make your own with my recipe shared in this post.
• Marshmallow cold foam: I share the recipe for this below
• Milk chocolate: for drizzling. I recommend using this milk chocolate sauce or something similar. You can also feel free to make your own. You can use Hershey's chocolate sauce in a pinch, but it's a bit thinner and sweeter than what Starbucks uses.
• Graham cracker crumbs: for topping

For the marshmallow cold foam:

• Heavy cream
• 2% milk
• Marshmallow syrup

And if you're making your own marshmallow syrup, you'll need:

• Granulated sugar
• Water
• Marshmallow fluff: also known as marshmallow creme in parts of the U.S.
• Vanilla extract
• Salt

☕️ Recipe tips

• If you're making your own marshmallow syrup, be sure to do that first as it will need time to cool before using it in the cold brew.

• For the syrup, I like to toast the sugar to get that toasted marshmallow flavor. I also add a full tablespoon of vanilla, but for true marshmallow flavor, I whisk in actual marshmallow fluff while the syrup is still hot.

• You can make the marshmallow sweet cream in advance and keep it in a mason jar or airtight container in your fridge. When you're ready for your drink, whip it into a cold foam.

• If you don't have a frother, you can make your cold foam in a blender or with a hand mixer. You can even just keep it in the mason jar and shake it vigorously. Your foam won't be quite as voluminous, but it will still give you a nice froth.

• As with all my cold brew recipes, I recommend using your favorite cold brew for this since the coffee truly shines. Lots of people like making their own, but I also really like Starbucks cold brew concentrate.

• One thing Starbucks has been doing lately is adding the flavored syrup into the cold foam and the drink itself (instead of just in the cold foam). They did it recently with the Toasted Coconut Cream Cold Brew and have done it again by using marshmallow syrup in the cold brew and I love it!

• Be sure to give the iced coffee a good stir once you add the syrup so that it evenly distributes and doesn't just sit at the bottom.

• Top the drink with marshmallow cold foam and then add a drizzle of chocolate sauce and crushed graham cracker crumbs to make your s'mores coffee dreams complete.

Starbucks has made a lot of awesome summer drinks over the years, but I honestly think this s'mores lineup is the best yet. This drink is packed with summer flavor and will make you think you're sitting at a campfire with its toasted marshmallow, chocolate, and graham flavor.

I can't believe it's taken them this long to bring s'mores back!

🎉 Variations on recipe

I happen to think this s'mores cold brew is perfection as is, but Starbucks customers are already finding lots of ways of switching with their own customizations! Here are some ideas you can do at home:

• Swap the cold brew for iced espresso if you want a stronger coffee flavor.
• Use the dairy or non-dairy alternative of your choice. I especially like oat milk or almond milk for this drink, but coconut milk is so yummy, too. (note that heavy cream is still dairy, so this won't be fully dairy-free unless you also swap that).
• Add a shot of espresso to your cold brew for an extra caffeine boost.
• Use less syrup in the drink for a less sweet drink or use more for a sweeter drink. You could also add vanilla syrup, brown sugar syrup, or caramel syrup for more flavors.
• Line the cup with chocolate sauce before pouring in the coffee and syrup. You can even add some to the bottom of the cup and/or a layer of graham cracker crumbs.
• Add a caramel drizzle for extra sweetness.
• Top the drink with mini marshmallows in addition to the graham cracker crumbs for more texture and fun.
• Drizzle with mocha sauce instead of milk chocolate if you want or if that's what you have on hand (it's what Starbucks uses in lots of their drinks).
• Use flavored cold brew, like vanilla, as your base for even more depth.

🧋 More summer cold brew recipes

While I think s'mores takes the summer prize, here are some more Starbucks cold brew recipes you should try this summer!

And be sure to take a peek at all my Starbucks copycat recipes!

This Starbucks S'mores Cold Brew copycat brings campfire flavor to your coffee without needing an actual campfire (or a Starbucks run!).

Once you've got the marshmallow syrup made or bought, the rest comes together so quickly, and you can have a summer iced coffee drink ready whenever the craving hits!

📖 Recipe