As soon as I saw Starbucks launch their new S’mores Cold Brew, I knew I had to recreate it at home. With smooth cold brew coffee, sweet marshmallow flavor, creamy marshmallow cold foam, rich chocolate drizzle, and a graham cracker topping, it’s everything you love about a campfire s’more in coffee form.

The best part? You can make this Starbucks copycat at home in just a few minutes for a fraction of the cost. Instead of spending $6–7 every time you’re craving one, you can keep a batch of homemade marshmallow syrup and cold brew in your refrigerator and make this drink whenever you want.

Whether you’re looking to save money, customize the sweetness, or simply avoid another coffee shop run, this homemade version is every bit as delicious as the original.

Why You’ll Love This Recipe

• Tastes just like the Starbucks S’mores Cold Brew (maybe even better)
• Costs a fraction of the coffee shop price
• Ready in under 5 minutes
• Easily customizable for dairy-free and sugar-free diets
• Made with simple ingredients
• Perfect for summer mornings

P.S If you’re a s’mores fan, here are S’more at home recipes to make this summer:

• Starbucks Iced S’mores Chai
• Starbucks S’mores Frappuccino
• Homemade Toasted Marshmallow Syrup
• S’mores Latte
• Homemade S’mores Creamer
• S’mores Popcorn

Starbucks S’mores Cold Brew Ingredients

Graham Cracker Topping (optional)

• 1 tablespoon salted butter
• 1 tablespoon brown sugar
• 2 crushed graham crackers
• Pinch of salt

Cold Brew

• 1 tablespoon marshmallow syrup (homemade or store-bought like Torani)
• 12 ounces unsweetened black cold brew
• Ice cubes

Marshmallow Cream Cold Foam

• 1 tablespoon marshmallow syrup (homemade or store-bought like Torani)
• 2 tablespoons 2% milk
• 3 tablespoons heavy cream

Alternatively, you could use 2 ounces of Homemade Vanilla Sweet Cream + 1 tablespoon of marshmallow syrup

Toppings

• Chocolate sauce (homemade (omit the peppermint extract) or store-bought like Torani or Hershey’s)
• Graham cracker topping (optional)

How to Make a Starbucks S’mores Cold Brew

Graham Cracker Topping (optional)

Combine butter and brown sugar in a small saucepan over low heat. Once melted, add in the crushed graham cracker and salt. Stir to combine, then let the mixture toast for 5 minutes or until toasty and fragrant. Remove from heat and let cool. Store any leftover topping in an airtight container in the fridge for up to 5 days.

Step 1: Prepare the Coffee

To a glass, add the marshmallow syrup, then pour in the cold brew coffee and stir to combine. Add in ice cubes, leaving room for the cold foam and toppings.

Step 2: Make the Marshmallow Cold Foam

In a separate glass or frothing pitcher, combine the marshmallow syrup, 2% milk, and heavy cream. (Alternatively, you could froth together 2 ounces of Homemade Vanilla Sweet Cream + 1 tablespoon of marshmallow syrup until thick and creamy).

Use a handheld milk frother to froth until thick and creamy, about 20–30 seconds.

Step 3: Assemble

Slowly pour the marshmallow cold foam over the cold brew.

Finish with a drizzle of chocolate sauce and a sprinkle of graham cracker topping.

Serve immediately and enjoy!

Starbucks Cold Brew Ratios

	TALL	GRANDE	VENTI	TRENTA
MARSHMALLOW SYRUP	1/2 TBSP	1 TBSP	1.5 TBSP	2 TBSP
COLD BREW	6 OUNCES	8 OUNCES	12 OUNCES	16 OUNCES
COLD FOAM	1 OUNCE	2 OUNCES	3 OUNCES	4 OUNCES
TOPPINGS	measure with your heart	measure with your heart	measure with your heart	measure with your heart

Homemade Marshmallow Syrup vs. Store-Bought

Both work beautifully in this recipe.

If you want the closest Starbucks flavor while controlling the ingredients, I recommend making my Homemade Toasted Marshmallow Syrup. It has a rich vanilla-marshmallow flavor and keeps well in the refrigerator, making it perfect for multiple drinks throughout the week.

Short on time? A store-bought marshmallow syrup like Torani or Monin works great too.

Homemade Starbucks Cold Brew

One of my favorite ways to save even more money is making a large batch of cold brew at home. It only takes a few minutes to prepare, lasts all week in the refrigerator, and makes recreating Starbucks drinks incredibly easy.

👉 Check out my Starbucks Cold Brew Guide here

Some of my favorite store-bought cold brew options include:

• SToK Unsweetened Black Cold Brew
• SToK Unsweetened Black DECAF Cold Brew

Sugar-Free Option

This recipe is easy to make lower in sugar.

Simply substitute:

• Sugar-free marshmallow syrup (if available) or follow the sugar free details on my homemade toasted marshmallow syrup recipe
• Sugar-free chocolate sauce
• Omit the brown sugar in the graham cracker topping, or use a sugar alternative like monk fruit or allulose

You’ll still get all the creamy, chocolate-marshmallow flavor with significantly less sugar.

Dairy-Free Option

To make this recipe dairy-free use:

• dairy-free heavy cream (such as Country Crock Plant Cream) for the cold foam
• dairy-free butter for the graham cracker topping
• dairy-free chocolate sauce for the topping

The result is still incredibly creamy and delicious.

Tips for the Best S’mores Cold Brew

• Use a strong, smooth cold brew for the best flavor.
• Froth the cold foam until thick enough to sit on top of the coffee.
• Don’t skip the graham cracker topping—it adds the classic s’mores flavor and texture.
• Use homemade syrup for the freshest flavor and to save even more money over time.

Frequently Asked Questions

Can I use iced coffee instead of cold brew?

Absolutely!

Can I make the cold foam without a frother?

Yes! You can shake the ingredients vigorously in a sealed mason jar or use a small whisk. A handheld frother, however, gives the thickest, creamiest texture.

How long does homemade marshmallow syrup last?

Stored in an airtight container in the refrigerator, it will stay fresh for up to 3 weeks.

More Starbucks Copycat Recipes You’ll Love

• How to Make Starbucks Cold Brew at Home
• Homemade Toasted Marshmallow Syrup
• Starbucks Vanilla Sweet Cream Cold Brew
• Starbucks White Chocolate Mocha
• Starbucks Brown Sugar Oatmilk Shaken Espresso