Hot Chocolate Bombs

Featured in: Sweet-Warm Comfort Plates

Craft impressive chocolate spheres using melted chocolate coating in silicone molds. Fill the delicate shells with premium cocoa powder, sweet powdered sugar, and fluffy mini marshmallows. Seal the halves together by warming the edges, then decorate with drizzled white chocolate and colorful sprinkles for a stunning presentation. When ready to enjoy, simply drop one into a mug of steaming milk and watch it dissolve into a luxuriously smooth, velvety hot chocolate that's perfect for cozy winter evenings or special occasions.

Updated on Fri, 30 Jan 2026 10:03:47 GMT
The finished Hot Chocolate Bombs show glossy chocolate spheres with a white chocolate drizzle, ready for a cozy mug.  Pin It
The finished Hot Chocolate Bombs show glossy chocolate spheres with a white chocolate drizzle, ready for a cozy mug. | sweetcairn.com

The kitchen counter was covered in chocolate splatters and my sister was laughing so hard she could barely stand up straight. We were attempting to make hot chocolate bombs for the first time, armed with YouTube tutorials and way too much confidence. Half our chocolate shells cracked and the other half looked like lopsided planets. But when we dropped those ugly, imperfect spheres into steaming milk and watched them bloom into the most decadent hot chocolate we'd ever tasted, none of the imperfections mattered anymore.

Last winter, I made a batch for my niece's birthday party and you would have thought I handed out gold bars. The kids gathered around the mug with wide eyes, absolutely mesmerized as the chocolate shell dissolved. Even better than the showmanship was how quiet the room got once everyone started sipping. Thats the moment I realized these arent just desserts, theyre tiny experiences wrapped in chocolate.

Ingredients

  • 300 g high-quality chocolate: The chocolate you choose defines everything. Spend a little extra on something youd happily eat straight from the bar because thats exactly what youre doing here
  • 6 tbsp unsweetened cocoa powder: This deepens the chocolate flavor so the final drink isnt too sweet. Ive tried skipping it and the drink tastes like warm milk instead of proper hot chocolate
  • 6 tbsp powdered sugar: The secret ingredient that makes the final drink perfectly sweet without any grainy texture
  • 1 cup mini marshmallows: They float to the top as the shell melts creating that classic hot chocolate moment we all love
  • 50 g white chocolate: Completely optional but those drizzles make these look like they came from a fancy chocolate shop

Instructions

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Melting the chocolate:
Set up your double boiler or use the microwave in 30 second bursts, stirring between each. You want it completely smooth and fluid like warm honey, not thick and gloppy
Creating the shells:
Use a pastry brush to coat your silicone molds with an even layer. The key word here is even. Thin spots will crack when you try to seal them later
The double layer trick:
Refrigerate for 10 minutes then add another coat of chocolate. This extra step is what keeps your bombs intact instead of shattering into pieces
Filling time:
Pile in your cocoa powder, powdered sugar, and marshmallows. Dont be shy with the filling. A stuffed bomb is a happy bomb
Sealing them shut:
Warm a plate for just a few seconds. Press an empty shell half onto it to melt the rim, then quickly press it onto your filled half. Smooth the seam with your finger while its still warm
The grand finale:
Drop one bomb into a mug and pour very hot milk over it. Stir slowly and watch the magic happen. That first sip will tell you if you nailed it
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Blend smoothies, sauces, and shakes quickly for easy breakfasts, snacks, and meal prep.
Check price on Amazon
These decadent Hot Chocolate Bombs with marshmallows and cocoa powder waiting to be melted into warm milk.  Pin It
These decadent Hot Chocolate Bombs with marshmallows and cocoa powder waiting to be melted into warm milk. | sweetcairn.com
These decadent Hot Chocolate Bombs with marshmallows and cocoa powder waiting to be melted into warm milk.  Pin It
These decadent Hot Chocolate Bombs with marshmallows and cocoa powder waiting to be melted into warm milk. | sweetcairn.com

My neighbor started leaving her empty mug on my porch after I made these for her as a thank you for watching my cat. It became our little thing. Id make a fresh batch, shed get a bomb in a cute bag, and somehow my cat always got extra treats too. Some recipes feed people. This one creates connections.

Getting Creative With Fillings

Once you master the basic chocolate shell, you can go wild with whats inside. Ive tried crushed peppermint candies during the holidays, a pinch of cayenne for those who like it spicy, and even caramel squares that melt into gooey rivers. The shell is your canvas and the filling is the art.

Working Temperature Matters

Chocolate has a temperamental personality. If your kitchen is too warm, the shells wont set. If the milk isnt hot enough when you serve them, theyll just sit there stubbornly intact. Ive learned to work with chocolate around 70F and serve with milk thats just stopped steaming from a boil. This little temperature awareness makes the difference between frustrating failures and smooth sailing.

Storage Secrets

These actually keep beautifully for about two weeks at room temperature, which means you can make a big batch on Sunday and have giftable treats ready all month long. Just keep them away from sunlight and any heat sources. I keep mine in a pretty glass jar on the counter and they disappear faster than I expect.

  • Package individual bombs in clear cellophane bags tied with ribbon for instant gifts
  • Make a double batch during the holidays because everyone will want to take some home
  • If your sealed bombs have visible gaps, touch them up with a little melted chocolate
A close-up view of Hot Chocolate Bombs featuring decorative sprinkles and a rich cocoa filling inside. Pin It
A close-up view of Hot Chocolate Bombs featuring decorative sprinkles and a rich cocoa filling inside. | sweetcairn.com
A close-up view of Hot Chocolate Bombs featuring decorative sprinkles and a rich cocoa filling inside. Pin It
A close-up view of Hot Chocolate Bombs featuring decorative sprinkles and a rich cocoa filling inside. | sweetcairn.com

Theres something about watching that chocolate sphere dissolve that feels like a tiny act of magic in an ordinary day. Sometimes the simplest kitchen projects bring the biggest joy.

Recipe FAQs

How long do these chocolate spheres stay fresh?

When stored in an airtight container at room temperature, these chocolate treats remain fresh for up to two weeks. Keep them away from direct sunlight and heat to prevent melting or blooming.

Can I use different types of chocolate?

Absolutely. Dark chocolate creates a richer, more intense flavor while milk chocolate offers a sweeter, creamier taste. You can also experiment with white chocolate or blend varieties for custom flavor profiles.

What's the best milk temperature for melting?

Heat your milk to just below boiling, around 180-190°F (82-88°C). The liquid should be steaming hot but not boiling, which ensures the chocolate shells melt evenly without scorching the milk.

Can I make these without special molds?

While silicone sphere molds work best, you can use clean spherical plastic containers or even balloon-dipped chocolate techniques. The results may vary slightly in shape but will still deliver the same magical melting experience.

What variations can I try?

Experiment by adding cinnamon, chili powder, or crushed peppermint to the filling. You could also use flavored marshmallows, add caramel drizzle, or include a dash of sea salt for a salted chocolate version.

Why did my shells crack when unmolding?

Cracking usually occurs when the chocolate is too cold or the molds are twisted too forcefully. Let the chilled shells sit at room temperature for a minute before gently releasing them. A double layer of chocolate also adds structural strength.

Hot Chocolate Bombs

Chocolate spheres filled with cocoa and marshmallows that transform into creamy hot cocoa when melted in hot milk.

Prep Duration
30 minutes
Time to Cook
5 minutes
Time Needed
35 minutes
Recipe by Hunter Phillips


Level Medium

Cuisine American

Makes 6 Portions

Dietary Notes Suitable for Vegetarians, No Gluten

Ingredient List

Chocolate Shells

01 10.5 oz high-quality dark or milk chocolate, chopped

Filling

01 6 tbsp unsweetened cocoa powder
02 6 tbsp powdered sugar
03 1 cup mini marshmallows

Decoration (optional)

01 1.75 oz white chocolate, melted (for drizzling)
02 Sprinkles, to taste

Steps

Step 01

Melt Chocolate: Melt the chocolate in a heatproof bowl over simmering water or microwave in 30-second intervals, stirring until smooth.

Step 02

Coat Molds: Using a pastry brush or spoon, coat 2.5-inch silicone sphere molds with a thick, even layer of melted chocolate, ensuring full coverage.

Step 03

Chill First Layer: Refrigerate molds for 10 minutes, then apply a second layer of chocolate for sturdiness and chill for an additional 10–15 minutes until set.

Step 04

Fill Shells: Carefully unmold the chocolate shells. Fill half of them with 1 tbsp cocoa powder, 1 tbsp powdered sugar, and a generous spoonful of mini marshmallows.

Step 05

Seal Halves: Warm a plate in the microwave. Press the rim of an empty shell half onto the plate to slightly melt the edge, then quickly press onto a filled half to seal and smooth the seam.

Step 06

Decorate: Drizzle with melted white chocolate and add sprinkles if desired. Allow to set before serving.

Step 07

Serve: Place a bomb in a mug, pour 1 cup (8 fl oz) of very hot milk over it, and stir until fully melted and creamy.

Equipment Needed

  • Silicone sphere molds (2.5-inch diameter)
  • Heatproof bowl
  • Pastry brush or small spoon
  • Microwave or double boiler
  • Measuring spoons
  • Plate

Allergy Info

Look through each ingredient for allergens and check with a healthcare provider if you’re uncertain.
  • Contains milk and soy from chocolate; may contain traces of nuts. Marshmallows may contain gelatin. Verify ingredient labels for allergens.

Nutrition Info (each serving)

Figures are for reference only—always seek medical advice when needed.
  • Caloric Value: 210
  • Fats: 11 grams
  • Carbohydrates: 29 grams
  • Proteins: 2 grams