Easy Marshmallow Swirl Fudge

I’ve always believed that fudge should be both a treat and a showstopper—and this Easy Marshmallow Swirl Fudge is just that. The gorgeous marbled swirls of creamy chocolate and fluffy marshmallow make it look like something from a fancy dessert shop, but it’s surprisingly simple to make at home. This recipe is one of my personal favorites, not only because of how striking it looks but also because it brings together two classic flavors that are universally loved.

Whether I’m preparing a dessert tray for a holiday gathering or just craving something sweet on a weekend, this fudge always hits the spot. It’s rich, smooth, and melts in your mouth with a perfect balance of chocolatey depth and pillowy sweetness. The best part? No candy thermometer needed, and it comes together quickly. Let me show you why you’ll fall in love with it too.

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Why You’ll Love This Easy Marshmallow Swirl Fudge

• Looks impressive, but so simple to make
• Swirls of chocolate and marshmallow create the perfect flavor combo
• Only a handful of ingredients needed
• No special tools or candy thermometer required
• Perfect for gifts, parties, or sweet cravings

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What Kind of Chocolate Should I Use for Easy Marshmallow Swirl Fudge?

When it comes to making this fudge, the type of chocolate you use can make a huge difference in both flavor and texture. I usually go for semi-sweet chocolate chips because they strike a perfect balance—not too bitter, not too sweet. You can also use a chopped chocolate bar if you prefer a richer flavor and smoother melt.

If you’re a fan of darker, more intense chocolate, you can definitely use dark chocolate chips or bittersweet chocolate. Milk chocolate works too, but keep in mind it will make the fudge sweeter and softer. The key is to use good-quality chocolate—since it’s the star of the show, it’s worth choosing something you really enjoy.

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Options for Substitutions

If you’re short on an ingredient or catering to dietary preferences, there are a few easy swaps you can make:

• Sweetened Condensed Milk: You can use a dairy-free version if needed, and it still sets beautifully.
• Chocolate Chips: Swap for vegan or sugar-free varieties depending on your needs. Or even try a mix of milk and dark chocolate for added depth.
• Marshmallow Creme: If you can’t find the jarred version, melt regular mini marshmallows with a bit of corn syrup as a quick substitute.
• Butter: Use plant-based butter for a dairy-free fudge that still tastes rich and creamy.
• Vanilla Extract: Almond extract is a fun twist if you want to change the flavor profile slightly.

These substitutions still deliver a luscious fudge with those iconic swirls—just with your own personal touch.

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Ingredients for This Easy Marshmallow Swirl Fudge

• Semi-Sweet Chocolate Chips
  These form the rich chocolate base of the fudge. They melt smoothly and give that deep, classic chocolate flavor that contrasts beautifully with the marshmallow.
• Sweetened Condensed Milk
  This is what gives the fudge its creamy texture and sweetness. It binds everything together without the need for extra sugar.
• Butter
  Just a bit adds richness and helps create that melt-in-your-mouth consistency.
• Vanilla Extract
  A splash of vanilla enhances the overall flavor and rounds out the sweetness.
• Marshmallow Creme
  This fluffy, sweet layer creates the beautiful swirls and lightens up the texture. It’s the perfect pairing with the chocolate base.

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Step 1: Prep Your Pan

Line an 8×8-inch square baking dish with parchment paper, leaving some overhang on the sides so you can lift the fudge out easily once it sets. Lightly grease the paper for smooth release.

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Step 2: Melt the Chocolate Mixture

In a medium saucepan over low heat, combine the semi-sweet chocolate chips, sweetened condensed milk, and butter. Stir constantly until everything is melted and smooth. Remove from heat and mix in the vanilla extract.

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Step 3: Add the Marshmallow Swirl

Working quickly while the chocolate is still warm, spoon dollops of marshmallow creme across the surface of the chocolate mixture in the saucepan. Gently fold it just a few times—don’t overmix, or you’ll lose the swirl effect.

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Step 4: Pour and Swirl

Pour the swirled mixture into your prepared pan. Use a knife or skewer to create more defined swirls by lightly dragging it through the fudge in random patterns.

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Step 5: Chill Until Set

Refrigerate the fudge for at least 2–3 hours, or until firm. Once set, lift it out using the parchment paper and cut into squares.

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How Long to Cook the Easy Marshmallow Swirl Fudge

Technically, there’s no actual “cooking” in this recipe—just gentle melting and chilling. The chocolate mixture only needs about 5–7 minutes on low heat to fully melt and combine. After that, the swirl and pour process takes just a few more minutes. The real wait is in the chilling: give it 2 to 3 hours in the fridge, or leave it overnight if you’re planning ahead.

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Tips for Perfect Easy Marshmallow Swirl Fudge

• Use low heat when melting the chocolate to avoid burning or seizing.
• Don’t over-stir the marshmallow creme—a few folds will give you those beautiful swirls without blending it in completely.
• Line your pan with parchment for easy lifting and clean cuts.
• Use a warm knife when slicing the chilled fudge to get smooth, clean edges.
• Room temperature matters—let the fudge sit out for 5–10 minutes before cutting to prevent cracks or crumbles.

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Watch Out for These Mistakes While Cooking

• Overheating the chocolate: High heat can scorch the chocolate or cause it to seize. Keep the heat low and stir constantly until everything is just melted.
• Overmixing the marshmallow swirl: It’s tempting to stir until perfectly blended, but that defeats the swirl. Less is more—gentle folds are key.
• Skipping the parchment paper: Without it, removing the fudge from the pan can be frustrating. Always line and grease the pan.
• Using the wrong chocolate: Avoid low-quality chips—they can be waxy or overly sweet, which affects the texture and taste.
• Cutting while too cold or too soft: Let the fudge set completely before slicing, and let it warm slightly on the counter to prevent cracking.

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What to Serve With Easy Marshmallow Swirl Fudge?

Hot Coffee or Espresso

The bitterness of a strong coffee balances the sweetness of the fudge perfectly.

A Scoop of Vanilla Ice Cream

Pairing a square of fudge with cold, creamy vanilla ice cream takes this dessert to another level.

Crushed Pretzels or Salted Nuts

Serve on the side or sprinkle a few on top before chilling for a sweet and salty combo.

Fresh Berries

Strawberries or raspberries add a juicy freshness that contrasts the richness of the fudge.

Whipped Cream

Light and airy whipped cream makes a fun topping or side dollop with each fudge square.

Holiday Cookie Platter

Add these fudge squares to a holiday treat board for an eye-catching and delicious variety.

Dessert Wine or Port

A small glass of something sweet and sippable pairs beautifully with this indulgent treat.

Popcorn

Serve fudge squares with plain or lightly salted popcorn for a playful movie-night snack board.

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Storage Instructions

Easy Marshmallow Swirl Fudge stores beautifully, which makes it perfect for gifting or prepping ahead. Once fully set, transfer the squares to an airtight container. You can store them at room temperature for up to 1 week, or in the refrigerator for up to 3 weeks—just be sure to separate layers with parchment or wax paper to prevent sticking.

If you’d like to make a big batch and save some for later, freeze the fudge for up to 2 months. Wrap each piece individually in plastic wrap, then place them in a freezer-safe container or bag. Thaw in the fridge or on the counter before serving.

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Estimated Nutrition

Here’s a rough estimate per square (based on 16 servings from an 8×8 pan):

• Calories: 180
• Total Fat: 8g
• Saturated Fat: 5g
• Cholesterol: 10mg
• Sodium: 35mg
• Total Carbohydrates: 25g
• Fiber: 1g
• Sugars: 22g
• Protein: 2g

Keep in mind these values can vary slightly depending on the chocolate and marshmallow brands used.

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Frequently Asked Questions

What size pan should I use for this fudge?

An 8×8-inch square pan is perfect. It gives you a nice thickness and makes about 16 squares. You can use a 9×9 pan for slightly thinner pieces.

Can I use regular marshmallows instead of marshmallow creme?

Yes, you can melt about 2 cups of mini marshmallows with a teaspoon of corn syrup to mimic the texture of marshmallow creme.

Does this fudge need to be refrigerated?

Not necessarily. It sets just fine at room temperature, but if your kitchen is warm or humid, refrigeration helps keep it firm.

How long does it take for the fudge to set completely?

About 2 to 3 hours in the refrigerator, or overnight if you want a firmer texture and cleaner slices.

Can I make this fudge ahead of time?

Absolutely. It stores well in the fridge for weeks or in the freezer for months. Just thaw before serving.

What can I do if my chocolate seizes while melting?

Add a small splash of warm sweetened condensed milk and stir gently. Avoid adding water—that can make it worse.

Can I add mix-ins like nuts or crushed cookies?

Yes! Stir in about ½ cup of chopped nuts, crushed Oreos, or even toffee bits before swirling in the marshmallow.

Is this recipe gluten-free?

It can be! All the main ingredients are typically gluten-free, but double-check labels—especially the marshmallow creme and chocolate chips.

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Conclusion

Easy Marshmallow Swirl Fudge is one of those recipes that feels special without requiring a ton of effort. It’s rich, creamy, beautifully swirled, and irresistibly sweet. Whether you’re gifting it during the holidays, adding it to a dessert tray, or just making something to satisfy a late-night chocolate craving, this fudge delivers every time.

You don’t need fancy equipment or candy-making experience—just a saucepan, a spatula, and a little swirl action. It’s fast, foolproof, and full of flavor. Give it a try, and don’t be surprised if it becomes your go-to fudge recipe.

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