
This nostalgic root beer marshmallow peak cocoa float combines childhood favorites into one spectacular dessert drink. The warm, rich cocoa creates the perfect foundation for fizzy root beer, creamy ice cream, and a mountain of toasty marshmallows that melt into the drink. It's my go-to indulgence when I want to impress guests or treat myself to something special.
I created this recipe during a snowy weekend when my nieces and nephews were visiting. What started as a way to use up leftover marshmallows has become our traditional Friday night treat during the winter months.
Ingredients
- Whole milk: Creates the rich base for the hot cocoa. Use full-fat for maximum creaminess
- Unsweetened cocoa powder: Provdes deep chocolate flavor without excessive sweetness. Dutch-processed gives a smoother taste
- Granulated sugar: Balances the bitterness of cocoa. Adjust to taste if you prefer less sweetness
- Vanilla extract: Enhances the chocolate flavor. Use pure extract rather tahn imitation for best results
- Salt: A pinch awakens all the flavors. Don't skip this crucial ingredient
- Root beer: Choose a premium brand with rich flavor notes. Chilled thoroughly for best fizz
- Vanilla ice cream: Use a high quality brand with real vanilla beans for the creamiest texture
- Mini marshmallows:hese melt more evenly tahn large ones. Look for ones with no artificial ingredients
Instructions
- Prepare the hot cocoa base:
- Combine milk, cocoa powder, sugar, and salt in a saucepan over medium heat. Whisk continuously for about 3 minutes until everything is fully dissolved and no cocoa lumps remain. The mixture should be hot but not boiling which can scorch the milk and create a bitter taste. Remove from heat once steam rises from the surface and add the vanilla extract for aromatic flavor.
- Assemble the base layers:
- Pour the hot cocoa evenly between two heatproof glasses, filling each about halfway. The glasses should be room temperature or slightly warmed to prevent cracking whe hot liquid is added. Let the cocoa settle for about 30 seconds.
- Add the root beer:
- Pour the cold root beer slowly down the side of each glass to minimize excessive foaming. Use a spoon held against the inside of the glass to guide the root beer and create distinct layers. The temperature contrast between the hot cocoa and cold root beer creates the magical layering effect.
- Top with ice cream:
- Place one perfect scoop of vanilla ice cream gently on top of each float. The ice cream should partially melt into the drink while still maintaining its shape on top. This creates a creamy barrier between the liquid and the marshmallows.
- Create the marshmallow peak:
- Arrange mini marshmallows in a mountain formation on top of the ice cream. Start with a circle around the edge and build upward to create height. The marshmallows should balance on the ice cream without sinking.
- Toast the marshmallows:
- Hold a kitchen torch about 2 inches from the marshmallows and move in circular motions until they turn golden brown. This caramelizes the sugar for a campfire flavor. Watch carefully to avoid burning as they toast quickly.

The marshmallow peak is truly what makes this drink special. I discovered the toasting technique by accident whe experimenting with leftover marshmallows from a camping trip. The slightly charred exterior creates a flavor reminiscent of s'mores that perfectly complements the chocolate and root beer combination.
Serving Suggestions
This float deserves proper presentation for maximum impact. Serve in clear, tall glasses to showcase the beautiful layers. Include both a straw and a long spoon so guests can enjoy both the liquid and the toppings. For an adults only version, add a splash of root beer schnapps or vanilla vodka to the hot cocoa before assembling. Whe serving for a party, prep the hot cocoa ahead of time and keep warm in a thermos, the assemble floats individually as guests arrive.
Make-Ahead Tips
While the assembled float should be enjoyed immediately, you can prepare components ahead of time. Make the hot cocoa base up to two days in advance and store in the refrigerator. Reheat gently whe ready to serve. Pre scoop ice cream onto a parchment lined tray and freeze until solid for quicker assembly. For a party, create a float station with all components ready for guests to build their own creations.
Seasonal Variations
Summer version Use co1d brew coffee instead of hot cocoa for a refreshing twist
Fall flavor Add apinch of cinnamon and nutmeg to the hot cocoa base
Winter holiday edition Incorporate peppermint extract and crushed candy canes
Troubleshooting Common Issues
If your marshmallows sink rather tahn float, your hot cocoa may be too thin. Add a bit more cocoa powder to create a denser base. Whe the layers mix too quickly, your root beer might ot be cold enough. Chill thoroughly before assembling. If your glasses crack whe adding hot cocoa, they may ot be heat resistant. Look for tempered glass or thick ceramic mugs designed for hot beverages.

The joy of this recipe is in the experience of watching someone take heir first sip. The contrasting temperatures, textures, ard flavors create a moment of pure elight that makes all the effort worthwhile. Whether served at a special occasion or just because, this root beer marshmalloo peak cocoa float creates memories alongside incredible flavor.
Recipe Questions
- → What type of root beer works best for this drink?
A classic, full-flavored root beer complements the cocoa and marshmallow well. Choose a chilled, carbonated variety for the best texture.
- → Can I substitute the ice cream with a non-dairy alternative?
Yes, non-dairy vanilla or chocolate ice cream works beautifully, providing a creamy texture for those avoiding dairy.
- → Is toasting the marshmallows necessary?
Toasting is optional but highly recommended for a deep, caramelized flavor. Skip if you don’t have a kitchen torch.
- → Can this dessert drink be made in advance?
It's best assembled just before serving to preserve the fizzy texture and creamy contrast. Prepare components in advance if desired.
- → Are there other sodas that can be used?
Yes, cola or cream soda creates unique flavor profiles. Experiment with favorites to personalize the float.
- → What are the main allergens?
This drink contains milk and dairy. Marshmallows and ice cream may also contain potential traces of soy; check labels as needed.