S’mores Frappuccino Recipe (Starbucks Copycat)

The Starbucks S’mores Frappuccino combines creamy coffee, toasted marshmallow flavor, rich chocolate, marshmallow whipped cream, and buttery graham crackers into one frozen drink that tastes just like a campfire treat.

While Starbucks only brings it back occasionally, you can easily recreate it at home with simple ingredients.

This homemade version stays true to the original by layering marshmallow whipped cream on the bottom and top of the drink, then finishing everything with graham cracker topping.

Every sip delivers creamy coffee, sweet marshmallow, chocolate, and buttery graham crackers.

It’s surprisingly easy to make, costs much less than buying one at Starbucks, and is perfect whenever you’re craving a rich frozen coffee drink during the warmer months.

Why You’ll Love This Recipe

Unlike many copycat recipes that simply blend chocolate into a Frappuccino, this version recreates all the layers that made the original Starbucks drink special.

The graham cracker topping adds buttery flavor while the marshmallow whipped cream makes every sip extra creamy.

Toasted marshmallow syrup gives the drink its signature campfire flavor without needing to toast marshmallows every time you make it.

It’s easy to customize with espresso or brewed coffee, your favorite milk, and even dairy-free substitutions. Best of all, it comes together in about 15 minutes.

S’Mores Frappuccino Ingredients

Marshmallow Whipped Cream

• 1/2 cup heavy whipping cream
• 1-2 tablespoons toasted marshmallow syrup

Frappuccino

• 2 shots espresso, cooled (or ½ cup strong brewed coffee)
• ¾ cup whole milk
• 1 tablespoon vanilla syrup
• 1-2 tablespoons toasted marshmallow syrup
• ⅛ teaspoon xanthan gum (optional)
• 1 cup ice cubes

Toppings

• Chocolate sauce
• Crushed graham crackers
• Whipped cream

Ingredient Notes

Toasted Marshmallow Syrup

Homemade toasted marshmallow syrup produces the closest flavor to the Starbucks version.

It has a rich marshmallow sweetness with subtle toasted notes that regular marshmallow syrup doesn’t quite replicate.

Espresso

Fresh espresso gives the drink a bold coffee flavor that balances the sweetness.

If you don’t have an espresso machine, strong brewed coffee or cold brew concentrate both work well.

Whole Milk

Whole milk creates the richest texture, but oat milk, almond milk, or 2% milk can easily be substituted.

Graham Crackers

Finely crushed graham crackers add the signature buttery flavor and light crunch that makes this drink taste like a classic s’more.

Xanthan Gum

Although optional, xanthan gum helps stabilize the Frappuccino and creates the thick, creamy consistency that’s similar to Starbucks.

How to Make a S’mores Frappuccino

Step 1: Prepare the Marshmallow Whipped Cream

Pour the heavy whipping cream and toasted marshmallow syrup into a mixing bowl or large measuring cup.

Using a hand mixer, electric whisk, or milk frother, whip until soft peaks form. The whipped cream should be thick enough to hold its shape while remaining smooth and creamy.

Refrigerate until you’re ready to assemble the drink.

Step 2: Blend the Frappuccino

Add the cooled espresso, whole milk, toasted marshmallow syrup, vanilla syrup, xanthan gum (if using), and ice cubes to a blender.

Blend on high for about 30 seconds, or until the mixture is completely smooth and thick.

If the Frappuccino seems too thick, add a splash of milk.

If it’s thinner than you’d like, blend in a handful of additional ice.

Step 3: Assemble the Drink

Spoon a generous layer of marshmallow whipped cream into the bottom of a tall serving glass.

Drizzle chocolate sauce around the inside of the glass.

Pour the blended Frappuccino over the whipped cream.

Top with another generous swirl of marshmallow whipped cream.

Sprinkle the graham crackers over the whipped cream.

Finish with an extra drizzle of chocolate sauce.

Serve immediately.

Tips for the Best S’mores Frappuccino

For the creamiest texture, always start with cold espresso or chilled brewed coffee. Warm coffee melts the ice too quickly and creates a watery drink.

Don’t skip the graham cracker topping. This creates the signature crunch that makes this recipe taste much closer to the Starbucks original.

Use homemade toasted marshmallow syrup whenever possible. It gives the drink much more authentic flavor than regular marshmallow syrup.

If you want an even thicker Frappuccino, freeze your coffee into ice cubes before blending.

Serve immediately after blending, since frozen coffee drinks begin melting fairly quickly.

S’mores Frappuccino Variations

• Make It Dairy-Free: Use oat milk along with a dairy-free whipping cream alternative.
• Extra Chocolate: Blend one tablespoon of chocolate sauce into the Frappuccino for a richer mocha flavor.
• Stronger Coffee: Use three espresso shots instead of two for a bolder coffee taste.
• Kid-Friendly Version: Replace the espresso with additional milk for a frozen marshmallow chocolate milkshake.

Serving Suggestions

This frozen coffee drink pairs perfectly with chocolate chip cookies, brownies, s’mores bars, banana bread, coffee cake, or homemade marshmallow treats.

If you’re serving guests, prepare the graham cracker topping and marshmallow whipped cream ahead of time so the Frappuccinos come together in just a few minutes.

S’mores Frappuccino Storage

The Frappuccino itself should be enjoyed immediately after blending for the best texture.

The graham crackers can be stored in an airtight container at room temperature for up to five days.

Marshmallow whipped cream can be refrigerated for up to 24 hours. If it softens slightly, whisk briefly before using.

Homemade toasted marshmallow syrup keeps well in the refrigerator for up to two weeks, making future Frappuccinos even easier.

Frequently Asked Questions

Can I use brewed coffee instead of espresso?

Yes. Brew your coffee slightly stronger than usual and chill it completely before blending.

Can I skip the xanthan gum?

Yes. It’s only used to create a thicker Starbucks-style consistency.

Can I use marshmallow fluff for S’mores Frappuccino?

Not for this recipe. Toasted marshmallow syrup blends much more smoothly into both the Frappuccino and whipped cream.