Servings: 1 | Total Time: 10 minutes
Oh wow, this is so good…
This Toasted Marshmallow Cold Brew is one of those drinks that feels like a treat and a little cozy moment in a cup.
It’s iced coffee—but with fluffy, creamy vanilla cold foam on top and this warm, nostalgic toasted marshmallow syrup swirled right in.
Think campfire vibes, but in your tumbler.
I made this one summer weekend when I wanted something special but didn’t feel like spending $7 at a café.
I’ve been making it ever since. It’s quick, dreamy, and absolutely hits the spot every single time.
🛒 What You’ll Need
For the Drink:
- 1 cup cold brew coffee (store-bought or homemade)
- 2 tablespoons toasted marshmallow syrup (store-bought or homemade)
- Ice
For the Vanilla Cold Foam:
- 1/4 cup cold heavy cream
- 2 tablespoons 2% or whole milk
- 1/2 teaspoon vanilla extract
- 1/2 tablespoon sugar or maple syrup (optional)
💛 Why I Love This Recipe
I love this drink because it feels fancy but takes less than 10 minutes. I first made it when I had leftover marshmallows from s’mores night, and it became a little ritual for my Saturday mornings.
- It’s cheaper and tastier than your usual coffee shop order
- That cold foam? Fluffy magic.
- The toasted marshmallow flavor is subtle, sweet, and nostalgic
- It’s flexible—you can make it stronger or sweeter depending on your mood
⚗️ Why This Recipe Works (Quick Science)
- Cold foam works because of fat and protein in the heavy cream—it whips up thick but pourable.
- Marshmallow syrup has sugar, which balances the bitterness in cold brew.
- Cold brew is smoother and less acidic than hot coffee, so it pairs perfectly with sweet flavors like marshmallow.
🛠 Tools You’ll Need
- Milk frother or small whisk
- Measuring spoons and cups
- Tall glass
- Spoon or straw
- Small mixing bowl
👩🍳 Pro Tips
- Use cold, cold ingredients for the best foam texture.
- Froth the foam right before serving—it starts to deflate after 5–10 minutes.
- Taste and adjust sweetness. You can always add more syrup!
- Use a wide-mouth glass to get a better foam “float” on top.
- Toasted marshmallow syrup varies—some are sweeter than others, so taste before adding extra sugar.
🔄 Substitutions & Variations
- No toasted marshmallow syrup? Try vanilla or caramel.
- Dairy-free? Use oat milk and coconut cream for the foam.
- Want it stronger? Add a shot of espresso.
- Make it a mocha by adding 1 tsp cocoa powder to the foam!
🧊 Make Ahead Tips
- Cold brew lasts in the fridge for 1 week—make a big batch!
- Toasted marshmallow syrup also lasts for weeks if homemade.
- Pre-mix the foam ingredients, then froth when ready to use.
🧾 Instructions
Step 1: Fill your glass with ice and pour in cold brew
Add ice to a tall glass and pour in 1 cup of cold brew coffee.
Step 2: Add toasted marshmallow syrup and stir
Pour in 2 tablespoons of toasted marshmallow syrup and give it a good stir so it mixes with the coffee.
Step 3: Mix cold foam ingredients
In a small bowl or cup, combine 1/4 cup cold heavy cream, 2 tablespoons milk, 1/2 teaspoon vanilla extract, and 1/2 tablespoon sugar (optional).
Step 4: Froth the cold foam
Use a handheld frother (or whisk quickly by hand) to froth the cream mixture until thick and fluffy but still pourable—about 20-30 seconds.
Step 5: Pour foam over coffee
Gently pour the vanilla cold foam over your cold brew. Let it sit on top or give it a light swirl. Add a sprinkle of cinnamon or toasted marshmallow bits on top if you want to get fancy.
❄️ Leftovers & Storage
- Foam is best fresh, but if you must, store it unfrothed for 1–2 days in the fridge.
- Cold brew with syrup mixed in can stay chilled up to 3 days (just re-stir).
- Don’t store the drink with foam already on top—it gets watery.
❌ Common Mistakes
- Using warm cream – It won’t froth well. Keep everything cold.
- Overfrothing – You want thick foam, but not whipped cream.
- Not tasting as you go – Adjust sweetness to your liking.
- Using regular coffee instead of cold brew – Cold brew is smoother and blends better.
🍪 What to Serve With It
- A chocolate chip cookie
- Scones or biscotti
- A slice of banana bread
- Toast with almond butter and honey
❓ FAQ
Q: Can I make it without a frother?
Yes! Just use a jar with a tight lid and shake hard for 30 seconds.
Q: Can I use instant coffee?
You can, but the flavor won’t be as smooth as cold brew.
Q: Where do I buy toasted marshmallow syrup?
You can find it online or at coffee supply stores—or make it at home with sugar, water, and toasted marshmallows melted down.
☕ Final Sip
This Toasted Marshmallow Cold Brew is the perfect little mix of comfort and caffeine. It’s fun, super easy, and honestly just makes your day better. Try it out and let me know how it went in the comments—did you make your own syrup? Add extra foam? I’d love to hear!
