Name: Chocolate Marshmallow Hearts Recipe
Prep time: 25 min
Cook time: 5 min
Total time: 30 min
Ingredients: 3 cups mini marshmallows; 2 tablespoons unsalted butter; 1 1/2 cups semi-sweet chocolate chips; 1 cup milk chocolate chips; 1 teaspoon vanilla extract; 1 pinch fine sea salt; 2 tablespoons sprinkles or colored sugar

Chocolate Marshmallow Hearts Recipe tastes like a cross between a fluffy s’more and a box of fancy chocolates, all in one bite-sized heart. It works perfectly for Valentine’s Day, anniversaries, kids’ parties, or any night when you want a cute dessert in under 1 hour. I tested these on my neighbors and my kids “accidentally” ate the photo batch before I finished shooting.

Why You Should Try This Chocolate Marshmallow Hearts Recipe

These chocolate marshmallow hearts taste rich, creamy, and slightly chewy, with a glossy chocolate shell and a pillowy center. They feel special enough for gifting, yet you make them with simple pantry ingredients and a silicone heart mold.

You control the sweetness, the chocolate intensity, and the toppings, so the recipe fits both kids and adults. You also prep them ahead, which saves your sanity on busy celebration days.

“I thought these came from a boutique chocolate shop. The shell snapped perfectly, the marshmallow tasted soft and fluffy, and the hearts disappeared from the dessert tray in minutes.”

Ingredients You’ll Need

Chocolate

2 cups (about 340 g) good-quality dark or semi-sweet chocolate chips
- Use at least 55–60% cocoa for a deeper flavor.
- Use chocolate chips for convenience, or chop bars if you prefer a smoother melt.
1 tablespoon refined coconut oil or neutral vegetable oil
- This helps the chocolate coat the molds smoothly and adds shine.

Marshmallow center

1 cup mini marshmallows
- Mini marshmallows melt faster and blend more evenly.
2 tablespoons unsalted butter
1 teaspoon pure vanilla extract
1 pinch fine sea salt
1 cup confectioners’ sugar, sifted
2–3 teaspoons milk or heavy cream
- Add just enough to form a soft, pipeable marshmallow filling.

Optional flavor twists

Use one or two of these to customize your chocolate marshmallow hearts recipe:

1–2 teaspoons strawberry jam or raspberry jam for a fruity swirl
1 teaspoon instant espresso powder for mocha hearts
1–2 tablespoons crushed graham crackers for a s’mores vibe
1 tablespoon peanut butter or almond butter for nutty hearts
1–2 tablespoons finely chopped toasted nuts for crunch

Toppings and decorations

Sprinkles, heart-shaped sprinkles, or nonpareils
Crushed freeze-dried strawberries
Flaky sea salt for a sweet-salty finish
Extra melted white chocolate for drizzling

Equipment

Silicone heart mold (candy or mini muffin size both work)
Heatproof mixing bowls
Small saucepan or microwave-safe bowl for melting chocolate
Rubber spatula
Small spoon or pastry brush
Piping bag or zip-top bag for the marshmallow filling
Baking sheet or tray to support the mold in the fridge

Tips & Tricks

Use a silicone heart mold so the chocolates release cleanly without cracking.
Dry the mold completely; even a tiny water droplet can cause chocolate to seize.
Melt chocolate gently in 20–30 second bursts in the microwave and stir often to avoid scorching.
Add a small amount of coconut oil to the chocolate to help it coat and shine.
Swirl the mold so the chocolate climbs up the sides and covers every corner.
Chill the first chocolate layer until firm before you add filling, so the marshmallow does not leak.
Leave a little space at the top when you pipe the marshmallow, so you can seal the hearts with more chocolate.
Tap the mold on the counter after each chocolate layer to pop air bubbles.
Use a toothpick to nudge chocolate into sharp corners of the heart shapes.
Add toppings while the final chocolate layer still feels wet so they stick.
Keep the hearts chilled if your kitchen runs warm, then bring them to room temperature for 5–10 minutes before serving.
Use dark chocolate if you like less sweetness, or milk chocolate if you make these for kids.
Flavor the marshmallow with extracts like almond, peppermint, or orange for different versions.
Work in batches if your mold has fewer cavities; just rewarm the chocolate gently if it thickens.
Pack finished hearts in mini paper candy cups for cute gifting and easier handling.

How to Make Chocolate Marshmallow Hearts Recipe

Step 1: Melt the chocolate

Place the chocolate chips and coconut oil in a heatproof bowl. Microwave in 20–30 second bursts, stirring between each, until the chocolate turns smooth and glossy. Stop heating as soon as only a few small pieces remain, then stir until they melt from residual heat.

Step 2: Coat the heart molds

Set the silicone heart mold on a baking sheet for stability. Spoon a small amount of melted chocolate into each cavity, about 1 to 2 teaspoons depending on size. Tilt and rotate the mold or use a small spoon or pastry brush to coat the bottom and sides of each heart.

Tap the tray gently on the counter to remove air bubbles. Scrape excess chocolate from the top of the mold so the edges stay neat. Chill the mold in the fridge for 10–15 minutes until the chocolate shell feels firm.

Step 3: Make the marshmallow filling

Place mini marshmallows and butter in a microwave-safe bowl. Heat in 20–30 second bursts, stirring between each, until the marshmallows melt and blend with the butter into a smooth mixture. Stir in vanilla extract and a pinch of salt.

Add confectioners’ sugar gradually and stir until the mixture thickens and turns smooth. Add milk or cream 1 teaspoon at a time until the filling feels soft, thick, and pipeable, similar to soft frosting. Fold in any optional mix-ins, like crushed graham crackers or a spoonful of peanut butter.

Step 4: Fill the chocolate shells

Transfer the marshmallow filling to a piping bag or zip-top bag and snip a small corner. Pipe the filling into each chocolate shell, leaving about 1–2 millimeters of space at the top for the final chocolate layer. Gently tap the tray again to level the filling.

If you use jam, add a tiny dollop in the center of each heart and cover it with a bit more marshmallow. Chill the filled shells for 5–10 minutes so the marshmallow firms slightly. This step helps the final chocolate layer sit neatly on top.

Step 5: Seal with more chocolate

Rewarm the remaining melted chocolate briefly if it thickened, stirring until smooth. Spoon chocolate over each heart to cover the marshmallow filling completely and reach the edges of the mold. Use a small offset spatula or the back of a spoon to smooth the tops.

Tap the tray once more to remove bubbles and level the chocolate. Add sprinkles, crushed freeze-dried berries, or flaky salt while the chocolate still feels wet. Chill the mold in the fridge for 20–30 minutes until the hearts set completely.

Step 6: Unmold and serve

Gently peel the silicone mold away from each heart and pop them out. Work slowly so you avoid fingerprints and keep the edges clean. Arrange the chocolate marshmallow hearts on a plate or in mini paper cups.

Keep them chilled until serving if your kitchen runs warm, then let them sit at room temperature for a few minutes so the centers soften slightly. Serve them as a dessert bite, a lunchbox treat, or a sweet gift.

What to Serve with Chocolate Marshmallow Hearts Recipe

Serve these chocolate marshmallow hearts with cold milk, hot cocoa, or a simple latte-style drink for adults. Pair them with fresh berries or sliced strawberries to balance the richness with a bit of tart fruit. Add them to a dessert board with pretzels, fresh fruit, and a few simple cookies for contrast.

You can also tuck one or two hearts into lunchboxes or snack boxes as a surprise treat. They work well on party dessert tables alongside cupcakes and fruit skewers.

Storage Options

Store chocolate marshmallow hearts in an airtight container in the fridge for up to 7 days.
Separate layers with parchment paper so they do not stick together.
Freeze the hearts on a baking sheet until firm, then transfer them to a freezer bag and keep them frozen for up to 2 months.
Thaw frozen hearts in the fridge overnight, then let them sit at room temperature for 5–10 minutes before serving.
Avoid storing them near strong-smelling foods so they keep their chocolate and vanilla flavor.