Name: Chocolate Marshmallow Hearts Recipe
Prep time: 25 min
Cook time: 5 min
Total time: 30 min
Ingredients: 2 cups mini marshmallows; 1 1/2 cups semi-sweet chocolate chips; 1 tablespoon vegetable oil; 1/2 teaspoon vanilla extract; 2 tablespoons sprinkles or crushed candy

Chocolate Marshmallow Hearts Recipe tastes like a cross between a fluffy s’more and a fancy boxed chocolate, and it fits anyone who loves cute, giftable desserts that still feel homemade. You can finish this from start to finish in about 1 hour, with most of that time spent waiting for chocolate to set while you “taste test” leftovers. I tested these while my kids circled the counter like tiny sharks, so you know they passed the real-world snack test.

Why Make This Chocolate Marshmallow Hearts Recipe at Home

Homemade chocolate marshmallow hearts taste fresher, softer, and more chocolatey than anything from a store shelf. You control the sweetness, the chocolate quality, and the size, so they fit both serious chocoholics and kids with tiny hands.

You also shape them exactly how you like, from thick, pillowy centers to thinner, chewier ones. They pack nicely in boxes or bags, so they work as Valentine’s gifts, party favors, or “I just wanted chocolate” treats.

“These chocolate marshmallow hearts taste like a gourmet candy shop special, but they come from your own kitchen and disappear in minutes.”

Ingredients You Need

Marshmallow layer

2 ½ teaspoons unflavored powdered gelatin
¼ cup cold water (for blooming the gelatin)
¼ cup water (for the sugar syrup)
¾ cup granulated sugar
2 tablespoons light corn syrup or golden syrup
1 teaspoon pure vanilla extract
Pinch of fine sea salt

Corn syrup keeps the marshmallow smooth and less sticky; you can swap it with honey in a pinch, but the flavor changes slightly. Use real vanilla extract instead of imitation for better flavor, since the marshmallow center carries a lot of the taste.

Chocolate coating

12 ounces good-quality dark or semisweet chocolate, chopped
1 tablespoon refined coconut oil or neutral vegetable oil

Use chocolate bars or couverture chocolate instead of chocolate chips when possible, since chips contain stabilizers that can make the coating thicker. If you only have chips, add a tiny extra splash of oil to thin the coating.

Optional decorations and flavor boosts

Colored sprinkles or sanding sugar
Crushed freeze-dried strawberries or raspberries
Flaky sea salt
Crushed graham crackers for a s’mores twist
A few drops of peppermint, almond, or orange extract for flavored marshmallow

Add extracts sparingly, since they taste strong in marshmallow. Start with ⅛ teaspoon, taste, and adjust.

Equipment list

Stand mixer with whisk attachment or a large bowl with a hand mixer
Small saucepan
Candy thermometer or instant-read thermometer that reads up to at least 240°F
Silicone spatula
8 x 8 inch baking pan or similar size
Parchment paper
Heart-shaped cookie cutters (1 to 2 inches wide work best)
Microwave-safe bowl or heatproof bowl for a double boiler
Wire rack set over a baking sheet or a sheet of parchment for drying the coated hearts

If you do not own heart-shaped cutters, line the pan and cut the marshmallow into squares, then coat them the same way.

Tips & Mistakes

Line the pan with parchment and lightly oil it so the marshmallow releases easily and keeps its shape.
Bloom the gelatin fully in cold water for at least 5 minutes, so it dissolves smoothly and does not leave rubbery bits.
Heat the sugar syrup to 238°F to 240°F (soft-ball stage) and no higher, or the marshmallow turns tough and chewy.
Start the mixer on low when you pour in the hot syrup, then increase speed, so the syrup does not splatter or harden on the bowl.
Whip the marshmallow until it looks thick, glossy, and holds soft peaks; if you stop too early, the hearts sag and feel sticky.
Spread the marshmallow quickly into the pan, since it starts to set within minutes and resists smoothing if you wait.
Dust your cookie cutters lightly with powdered sugar or a bit of oil, so they cut cleanly and do not pull the marshmallow.
Chill the cut marshmallow hearts briefly before dipping, so they stay firm and do not melt into the warm chocolate.
Melt chocolate slowly and gently; high heat can scorch it and give the coating a dull, grainy finish.
Dip one test heart first to check chocolate thickness; if it coats too heavily, stir in a little more oil to thin it.
Place dipped hearts on parchment or a rack and leave space between them, so they do not glue themselves together.
Add sprinkles or toppings right after dipping each heart, since the chocolate sets quickly and toppings will not stick later.
Keep water away from the chocolate bowl, since even a drop can cause seizing and turn the mixture thick and clumpy.
Taste the marshmallow mixture before it fully sets; if it tastes too sweet, use darker chocolate next time to balance it.
Store finished hearts in a cool, dry spot; heat and humidity can make the chocolate bloom and the marshmallow sticky.

How to Make Chocolate Marshmallow Hearts Recipe

Step 1: Prepare the pan and bloom the gelatin

Line an 8 x 8 inch pan with parchment paper, leaving overhang on two sides to lift the marshmallow later. Lightly grease the parchment with a thin film of neutral oil or nonstick spray. Sprinkle a little powdered sugar over the bottom if you want extra insurance against sticking.

Add ¼ cup cold water to the bowl of a stand mixer. Sprinkle the gelatin evenly over the surface of the water. Let it sit for 5 to 10 minutes so the gelatin softens and absorbs the liquid.

Step 2: Cook the sugar syrup

In a small saucepan, combine the remaining ¼ cup water, granulated sugar, and corn syrup. Stir gently just until the sugar looks moistened and no dry patches remain. Clip a candy thermometer to the side of the pan, with the tip in the syrup but not touching the bottom.

Set the pan over medium heat and cook without stirring. Swirl the pan gently if you see sugar crystals on the sides. Heat the mixture until it reaches 238°F to 240°F; this usually takes about 6 to 8 minutes.

Step 3: Whip the marshmallow base

Turn the mixer to low speed so the bloomed gelatin starts to move. Carefully pour the hot sugar syrup in a thin, steady stream down the side of the bowl, not directly onto the whisk. Keep the mixer running on low until all the syrup enters the bowl.

Increase the speed to high and whip for 7 to 10 minutes. Add the vanilla and salt during the last minute of whipping. Stop when the mixture looks thick, glossy, and holds soft peaks that slowly fold over.

Step 4: Spread and set the marshmallow

Immediately scrape the marshmallow mixture into the prepared pan with a greased silicone spatula. Smooth the top as evenly as you can; small swirls add charm, so do not stress. Dust the top lightly with powdered sugar if you like a less sticky surface.

Let the marshmallow sit at room temperature for at least 3 hours, or up to overnight, until it feels firm and dry to the touch. Cover the pan loosely with foil if you leave it overnight, so dust does not settle on top.

Step 5: Cut heart shapes

Lift the marshmallow slab out of the pan using the parchment overhang. Place it on a cutting board dusted with powdered sugar. Peel back the parchment from the sides.

Lightly grease your heart-shaped cookie cutters or dip them in powdered sugar. Press the cutters straight down into the marshmallow and pull them straight up for clean edges. Re-dust or re-grease the cutters as needed, and gather scraps to cut more hearts or snack on.

Step 6: Melt the chocolate

Place the chopped chocolate and coconut oil in a microwave-safe bowl. Microwave in 20 to 30 second bursts, stirring between each, until the chocolate looks mostly melted. Stir until completely smooth and glossy.

If you prefer a double boiler, set the bowl over a pot of barely simmering water, making sure the bottom of the bowl does not touch the water. Stir until melted and smooth, then remove from heat. Let the chocolate cool slightly until it feels warm but not hot to the touch.

Step 7: Dip the marshmallow hearts

Set a wire rack over a parchment-lined baking sheet, or just line a flat surface with parchment. Drop one marshmallow heart into the melted chocolate and use a fork to flip it and coat all sides. Lift it out, tap the fork gently on the bowl edge to shake off extra chocolate, and slide it onto the rack or parchment.

Sprinkle toppings over the heart while the chocolate still looks wet. Repeat with the remaining hearts, working in batches so the chocolate stays warm and fluid. If the chocolate thickens, warm it again briefly and stir until smooth.

Step 8: Let the chocolate set

Leave the coated hearts at room temperature until the chocolate firms up, about 30 to 45 minutes. If your kitchen runs warm, place the tray in the fridge for 10 to 15 minutes to speed things up, but avoid long chilling so condensation does not form later. Once the chocolate sets, gently peel the hearts off the parchment and trim any chocolate “feet” with a small knife if you want tidy edges.

Variations I’ve Tried

I swap the vanilla for peppermint extract and decorate the tops with crushed candy canes for a winter version. I also stir a little almond extract into the marshmallow and top the hearts with toasted sliced almonds for a nutty twist. For a fruity batch, I dust the marshmallow slab with powdered freeze-dried strawberries before cutting, then sprinkle more over the chocolate coating.

I sometimes coat only the bottoms in chocolate and drizzle the tops, which saves time and gives a lighter bite. I also roll the freshly cut marshmallow hearts in crushed graham crackers, then dip them in chocolate for a s’mores-style chocolate marshmallow hearts recipe. Kids love a half-dark, half-milk chocolate swirl, so I melt both and marble them together when I want a playful look.

How to Serve Chocolate Marshmallow Hearts Recipe

Serve chocolate marshmallow hearts at room temperature so the chocolate feels snappy and the center tastes soft and fluffy. Arrange them on a platter with fresh berries, sliced fruit, and maybe a bowl of pretzels for a sweet-salty mix. Pack a few in small treat bags or boxes with ribbon for classroom parties, birthdays, or neighbor gifts.

They also work well as cupcake toppers or on a dessert board with cookies and brownies. If you host a hot cocoa bar, set a plate of these nearby and watch them disappear faster than the cocoa.

How to store

Store chocolate marshmallow hearts in an airtight container at room temperature for 3 to 4 days, in a cool, dry spot away from sunlight.
If your kitchen runs warm, keep them in the fridge for up to 1 week; let them sit at room temperature for 10 to 15 minutes before serving so the texture softens.
Freeze undecorated marshmallow hearts (before dipping) on a tray until firm, then transfer them to a freezer bag for up to 2 months; thaw at room temperature, then dip in chocolate.
Avoid freezing fully coated hearts, since condensation can spot the chocolate; if you must freeze them, wrap tightly, thaw in the fridge, then bring to room temperature in the container before opening.
To refresh slightly stale hearts, microwave one or two on a plate for 5 to 8 seconds; the marshmallow softens and the chocolate edges warm just enough for a cozy treat.