DIY S’Mores Cold Brew: A #1 CosMc’s-Inspired Treat

With McDonald’s CosMc’s closing its doors by June 2025, fans are craving ways to recreate its iconic S’Mores Cold Brew at home. This decadent coffee drink, topped with toffee sprinkles and bursting with chocolate, marshmallow, and graham cracker flavors, was a standout on the CosMc’s menu. Our homemade version is easy to make and perfect for coffee lovers missing that nostalgic, out-of-this-world taste. Let’s dive into this indulgent recipe!

What Makes CosMc’s S’Mores Cold Brew So Special?

CosMc’s S’Mores Cold Brew captured hearts by merging two beloved treats—coffee and the classic campfire s’more—into one sensational drink. But what exactly makes this combination so irresistible?

First, the foundation is cold brew coffee, which is naturally smooth and less acidic than traditional hot-brewed coffee. This mellow flavor profile creates a perfect canvas for layering rich chocolate, fluffy marshmallow, and crunchy graham cracker notes.

The magic lies in how these nostalgic flavors blend seamlessly without overpowering the coffee’s essence. Instead of a sugary overload, CosMc’s delivered a harmonious balance where each element enhanced the other. The drink’s toffee sprinkles added a delightful crunch and subtle caramel sweetness, rounding out the sensory experience.

Cold brew coffee’s growing popularity reflects how it suits this kind of creative infusion. Its smooth texture holds up well when mixed with syrups and creams, unlike hot coffee that can sometimes curdle or become too bitter with additives.

As you recreate this at home, you’ll tap into that modern trend of specialty coffee drinks inspired by familiar desserts—a perfect way to enjoy something comforting yet fresh.

Ingredients You’ll Need for Your DIY CosMc’s S’Mores Cold Brew

Before you start mixing, here’s what you’ll want to have on hand. This list is crafted to capture the exact flavors CosMc’s fans adore, with easy-to-find ingredients to simplify your preparation.

• 1 cup of cold brew coffee (store-bought or homemade)
  
• 2 tablespoons chocolate syrup (choose rich, quality cocoa for best taste)
  
• 1 tablespoon marshmallow syrup (or toasted marshmallow-flavored syrup)
  
• 1/4 cup milk or cream (dairy or plant-based, depending on your preference)
  
• 1 tablespoon graham cracker crumbs (for garnish and rim)
  
• Toffee sprinkles (about 1 teaspoon for topping)
  
• Ice cubes as needed
  
• Optional: whipped cream for extra indulgence
  

Tips for Choosing Ingredients

• Use a cold brew concentrate or prepare your own by steeping coarsely ground coffee in cold water for 12-24 hours.
  
• Opt for syrups without artificial flavors or excessive sugar to maintain balance.
  
• For graham cracker crumbs, crush store-bought crackers finely, or use syrup versions if available for easy rimming.
  
• Plant-based milks like oat or almond can provide a creamy texture with fewer calories.
  

Step-by-Step Guide: How to Make CosMc’s-Inspired S’Mores Cold Brew at Home

Here’s how to transform these ingredients into a glass of creamy, nostalgic bliss.

1. Prepare Your Cold Brew Coffee
   Pour 1 cup of cold brew coffee into a shaker or large glass. If you want a stronger caffeine kick, add an extra shot of espresso.
   
2. Add the Chocolate and Marshmallow Flavors
   Stir in 2 tablespoons of chocolate syrup and 1 tablespoon of marshmallow syrup. Mix well to blend the flavors evenly.
   
3. Incorporate Milk or Cream
   Pour 1/4 cup of your preferred milk or cream into the mix. This adds a silky texture and softens the intensity of the syrups and coffee.
   
4. Prepare the Glass
   Take a serving glass and rim it with graham cracker crumbs. To do this, lightly wet the rim with water or syrup and dip it into the crumbs for a flavorful, crunchy edge.
   
5. Fill the Glass with Ice and Pour the Mixture
   Add ice cubes to your rimmed glass, then pour in your blended cold brew mixture.
   
6. Top with Toffee Sprinkles
   Sprinkle about 1 teaspoon of toffee bits or toffee sprinkles over the top for that signature CosMc’s crunch.
   
7. Optional: Add Whipped Cream
   For extra decadence, crown your drink with a swirl of whipped cream before adding toffee sprinkles.
   

Quick Tips to Customize Your Drink

• Adjust the chocolate and marshmallow syrup quantity depending on your sweetness preference.
  
• Use non-dairy creamers like coconut or cashew for a dairy-free creamy finish.
  
• For a lighter option, replace cream with unsweetened almond milk and reduce syrup slightly.
  

Variations and Serving Suggestions for Your DIY CosMc’s Cold Brew

Your homemade S’Mores Cold Brew can be customized endlessly, making it fun to experiment.

• Vegan or Dairy-Free Version: Use oat milk and ensure your syrups are vegan-friendly. Top with coconut whipped cream instead of traditional dairy.
  
• Extra Espresso Boost: Add a shot of espresso if you need a stronger pick-me-up.
  
• Flavored Twists: Drizzle caramel or vanilla syrup for a layered flavor profile. Cinnamon or nutmeg sprinkled on top can add warm spice notes.
  
• Hot Version: If the weather calls for warmth, heat your cold brew mixture gently and skip the ice—this transforms the drink into a cozy, s’mores-inspired latte.
  
• Pairings: This drink pairs wonderfully with breakfast pastries like croissants, almond biscotti, or simple butter cookies to complement the chocolate and marshmallow flavors.
  

Health and Nutritional Insights: What to Know About Your S’Mores Cold Brew

It’s natural to wonder about the nutritional impact of this indulgent treat. Here’s a balanced overview.

• Calories: Depending on the milk and syrup choices, one serving ranges roughly between 200-350 calories. Full-fat cream and sugary syrups push it higher, while plant-based milks and reduced syrup can lower it.
  
• Caffeine Content: A cup of cold brew coffee typically contains 100-200 mg of caffeine. Adding espresso increases this count, so consider your caffeine tolerance.
  
• Sugar: Marshmallow and chocolate syrups add sugars; choosing low-sugar or natural sweeteners helps keep intake moderate.
  
• Allergens: Dairy and gluten can be concerns here. Use gluten-free graham crackers and dairy-free milks to accommodate dietary restrictions.
  
• Balance: To enjoy this drink as part of a balanced diet, consider pairing it with a protein-rich snack or incorporating it into your occasional treats rather than daily coffee habits.
  

Why You Should Try Making CosMc’s S’Mores Cold Brew at Home

Beyond the obvious taste benefits, there are compelling reasons to craft this drink yourself:

• Cost-Effective: Specialty coffee drinks at cafes can be expensive. Making your own saves money and lets you control ingredient quality.
  
• Customization: You decide the sweetness, creaminess, and caffeine level—no limits, no surprises.
  
• Creative Fun: Crafting a drink that nods to a beloved menu item feels rewarding and can brighten your day.
  
• Entertaining: Impress friends and family with a coffee treat that’s both nostalgic and unique.
  
• Convenience: You can prepare it anytime, with ingredients that keep well on hand, avoiding long cafe lines.
  

Frequently Asked Questions (FAQ) about CosMc’s S’Mores Cold Brew

What is CosMc’s S’Mores Cold Brew?
CosMc’s S’Mores Cold Brew is a specialty coffee drink combining smooth cold brew coffee with chocolate, marshmallow, and graham cracker flavors, topped with toffee sprinkles. It’s inspired by the nostalgic s’mores campfire treat and was popularized by McDonald’s CosMc’s menu.

Can I make CosMc’s S’Mores Cold Brew without a cold brew maker?
Absolutely! You can prepare cold brew by steeping coarsely ground coffee in cold water for 12-24 hours in a jar or pitcher, then straining it through a fine mesh or coffee filter.

How long does homemade S’Mores Cold Brew last in the fridge?
Stored in an airtight container, cold brew coffee can last up to two weeks. However, once mixed with syrups and milk, consume within 2-3 days for optimal flavor and freshness.

Is there a vegan version of CosMc’s S’Mores Cold Brew?
Yes! Use plant-based milk such as oat or almond milk and ensure your chocolate and marshmallow syrups are vegan-friendly. Top with coconut whipped cream to complete the treat.

Where can I buy CosMc’s S’Mores Cold Brew ingredients?
You can find chocolate and marshmallow syrups, toffee sprinkles, and graham crackers at most grocery stores or online specialty retailers. Cold brew coffee is widely available, or you can make your own.

Conclusion: Enjoy Your Homemade CosMc’s S’Mores Cold Brew

Bringing the flavors of CosMc’s iconic S’Mores Cold Brew into your kitchen lets you relive a cherished taste that’s both comforting and adventurous. This recipe offers a perfect blend of creamy coffee, chocolate richness, and nostalgic marshmallow sweetness, topped off with crunchy graham cracker and toffee accents.

By crafting it yourself, you gain full control over flavor, sweetness, and dietary needs while saving money and adding a bit of joy to your routine. Share your creations on social media with #CosMcsColdBrew and connect with other coffee enthusiasts who appreciate this cosmic blend of flavors.

Ready to transform your coffee break? Gather your ingredients, mix up this homemade delight, and enjoy a sip of nostalgia anytime you want.