How to Make Hot Chocolate Bombs

Hot chocolate bombs are pure holiday magic. They're hollow chocolate spheres filled with cocoa mix and mini marshmallows. Drop one into a mug, pour hot milk over the top, and watch it melt open as the marshmallows float up. They're fun to make, kids are obsessed with them, and they make one of the most popular homemade Christmas gifts of the season.

Why you'll love hot chocolate bombs

• The "wow" moment when they burst open in the mug.
• Perfect homemade gift, packed in a box or a clear bag.
• Fun to make with kids.
• Endlessly customisable: peppermint, salted caramel, white chocolate and more.

What you need

• A silicone sphere mould (2 1/2 inch / 6 cm cavities)
• A pastry brush or spoon
• A plate you can warm (or a small frying pan)

Ingredients (makes 6 bombs)

• 12 oz (340 g) good-quality milk or dark chocolate, chopped
• 6 tbsp hot cocoa mix
• 1/2 cup (25 g) mini marshmallows
• Sprinkles, crushed candy canes or a drizzle of white chocolate, to decorate

To serve: 1 cup (240 ml) hot milk per bomb

Instructions

1. Melt the chocolate. Melt two-thirds of the chocolate in short 20-second bursts, stirring well each time. Add the remaining third and stir until completely melted and smooth. This quick "seeding" method helps the shells set shiny and snap cleanly.
2. First coat. Spoon or brush a layer of chocolate into each mould cavity, coating the sides all the way to the edge. Chill for 5 minutes.
3. Second coat. Add a second layer, especially around the rims (the thinnest part). Chill for 10–15 minutes until fully set.
4. Unmould. Gently peel the shells out of the mould. Handle them with cool hands or gloves.
5. Fill. Fill half of the shells with 1 tbsp hot cocoa mix and a few marshmallows.
6. Seal. Warm a plate (in the microwave or with hot water, then dry it). Press the rim of an empty shell on the warm plate for a second to melt the edge, then place it on top of a filled shell and press gently to seal.
7. Decorate with a drizzle of melted chocolate and sprinkles.
8. To serve: place a bomb in a mug and pour 1 cup of steaming hot milk over it. Stir and enjoy!

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Alla's tips

• Use good chocolate bars, not chips or candy melts, for shiny shells that snap.
• Two coats are a must. Thin shells crack when you unmould them.
• Thicken the rims. That's where most shells break.
• Work with cool hands. Warm fingers leave prints and melt the shells. Gloves help.
• Keep the room cool. If your kitchen is warm, chill between each step.
• The milk must be steaming hot so the bomb melts properly.

Flavour ideas

• Peppermint: add crushed candy canes inside and on top.
• Salted caramel: add a few caramel chips and a pinch of sea salt.
• White chocolate: use white chocolate shells and white hot cocoa mix.
• Mocha: add 1/2 tsp instant coffee to the cocoa mix.

Storage and gifting

Store in an airtight container in a cool, dry place for up to 2 weeks (not the fridge, which causes condensation). For gifting, place them in cupcake liners inside a box, and add a little tag: "Place in a mug and pour over 1 cup of hot milk."

FAQ

Why did my shells crack? They were too thin. Do two coats and make the rims extra thick.

Do I need to temper the chocolate? It's not essential, but the "seeding" method in step 1 gives shinier shells that don't melt as quickly in your hands.

Can I use candy melts? Yes, they're easier to work with, but the hot chocolate will taste less rich.

Why won't my halves stick together? The plate wasn't warm enough. Warm it again and press the rim on it for a second until it just melts.

How long do hot chocolate bombs last? Up to 2 weeks in a cool, dry place.

What size mould should I use? 2 1/2 inches (6 cm) fits most mugs perfectly.

More Christmas chocolate treats

• Easy Peppermint Bark
• Christmas Crack (Saltine Cracker Toffee)
• Ferrero Rocher Truffles
• Christmas Tree Brownies

Hugs, Alla xox

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