Easy Marshmallow Swirl Fudge

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If you’re craving something sweet, dreamy, and ridiculously simple to make, this Easy Marshmallow Swirl Fudge is your new go-to. With its velvety chocolate and creamy marshmallow layers beautifully swirled together, it’s not only delicious but visually stunning. Whether you’re prepping treats for a holiday tray, party platter, or just a cozy movie night in, this fudge never fails to impress.

What makes this fudge stand out is how fast it comes together with minimal fuss. No candy thermometer, no tricky steps—just melt, swirl, chill, and slice. It’s the kind of recipe that makes you look like a pro even if you’re a beginner. Plus, it stores well, making it perfect for make-ahead gifts and gatherings.

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Preparation Phase & Tools to Use

To create perfect swirls and creamy texture, using the right tools makes all the difference:

• 8×8-inch square baking dish: This size helps create that thick, luxurious fudge square with deep, defined swirls.
• Parchment paper: Makes removing the fudge from the pan super easy and mess-free.
• Heatproof mixing bowls: Essential for melting both the chocolate and marshmallow layers without risk of cracking or melting.
• Microwave or double boiler: You can use either method to melt your chocolate chips—microwave is quick, but a double boiler gives you more control.
• Offset spatula or butter knife: Helps create those iconic marbled swirls by gently pulling through the layers.
• Silicone spatula: Perfect for scraping every last bit of melted goodness into the pan.

Set your tools out beforehand so you can move fast—melting and swirling is easiest while everything is still warm and smooth.

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Ingredients for the Easy Marshmallow Swirl Fudge

Each ingredient plays an essential role in creating the luxurious texture and balanced flavor in this sweet treat:

• Semi-sweet chocolate chips – They bring a rich, deep cocoa base that contrasts beautifully with the sweet fluff.
• Sweetened condensed milk – This adds creaminess and binds the chocolate into a smooth, glossy fudge.
• Butter – Just a touch softens the texture and rounds out the flavor.
• Mini marshmallows or marshmallow creme – The star of the swirl! They melt into soft ribbons that give this fudge its signature look and light texture.
• Vanilla extract – A subtle depth enhancer that complements both chocolate and marshmallow tones.

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How To Make the Easy Marshmallow Swirl Fudge

Step 1: Prepare the Pan

Line an 8×8-inch baking dish with parchment paper, leaving a little overhang for easy lifting later.

Step 2: Melt the Chocolate Base

In a heatproof bowl, combine the chocolate chips, sweetened condensed milk, and butter. Microwave in 30-second bursts, stirring between each, until smooth and fully melted. Stir in vanilla extract.

Step 3: Create the Marshmallow Swirl

If using mini marshmallows, melt them in a separate bowl with a tiny splash of water (or butter) until smooth. If using marshmallow creme, you can skip the melting step—just warm it slightly so it’s easy to swirl.

Step 4: Layer and Swirl

Pour the chocolate mixture into your prepared pan. Dollop marshmallow fluff across the surface, then use a butter knife or offset spatula to gently swirl the two together in figure-eight motions.

Step 5: Chill and Set

Place the pan in the refrigerator and let the fudge set for at least 2 hours, or until firm. Once set, lift it out using the parchment and cut into squares.

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How to Serve and Store This Fudge

This fudge is best served chilled straight from the fridge for those clean, creamy bites that melt in your mouth. If serving for a party, let it sit at room temperature for 10–15 minutes to soften slightly without losing shape.

To store, place the fudge squares in an airtight container with parchment between layers. It will last up to 2 weeks in the fridge or up to 3 months in the freezer. Just thaw in the refrigerator overnight before serving.

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Frequently Asked Questions

How do I get perfect swirls?

Use a butter knife or offset spatula and drag gently in figure-eight motions. Don’t overdo it—just a few swipes will give you that beautiful marbled effect.

Can I use white chocolate instead of semi-sweet?

Yes, but white chocolate is sweeter and melts differently. Use high-quality white chocolate and reduce the sweetened condensed milk slightly to avoid it becoming overly sweet.

What’s the best way to cut the fudge cleanly?

Use a hot knife! Dip your knife in hot water, wipe it dry, and slice. Repeat for each cut to get smooth, clean edges.

Can I make this ahead of time for gifts?

Absolutely. This fudge holds up beautifully in the fridge or freezer, making it a great option for edible gifting.

Is marshmallow creme better than mini marshmallows?

Both work great! Marshmallow creme is easier to swirl, but melted mini marshmallows give the same flavor and texture.

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Want More Dessert Ideas with a Twist?

If you loved this Easy Marshmallow Swirl Fudge, check out some other crowd-pleasers from Life With Olivia:

• Paula Deen’s 5-Minute Fudge for a speedy chocolate fix.
• Strawberry Crunch Pound Cake that’s fruity, nostalgic, and fun.
• Grape Crush Cupcakes with a burst of unexpected flavor.
• Whipped Shortbread Cookies that melt in your mouth.
• Pineapple Coconut Dream Cake when you’re craving a tropical vibe.

And for more daily recipe inspiration, follow me on Pinterest – Life With Olivia.

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Save This Recipe for Later

📌 Save this recipe to your Pinterest dessert board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you use marshmallow creme or go with the mini marshmallows? Did you try a swirl of white chocolate or maybe add a pinch of sea salt?

I love hearing how others make these recipes their own. Questions are welcome too—let’s help each other bake smarter.

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