There’s something wonderfully nostalgic about the first bite of fudge, isn’t there? The combination of rich chocolate melting in your mouth, perfectly balanced with a fluffy sweetness—it's a simple joy that can brighten any day. I stumbled upon this Marshmallow Swirl Fudge recipe during a cozy weekend spent sifting through old family cookbooks, and I just knew I had to recreate it.
With just a handful of ingredients, this fudge comes together in no time and delivers a delightful contrast of flavors and textures that are sure to impress. Perfect for gatherings or a little treat just for you, it’s an effortless way to elevate your homemade dessert game. Join me as we whip up this creamy, dreamy fudge that redefines indulgence—because who says you can’t have a bit of fun while you cook?
Why You'll Love This Marshmallow Swirl Fudge
- This Marshmallow Swirl Fudge is incredibly easy to make, requiring just a few simple ingredients and minimal effort.
- The rich chocolate flavor combined with the lightness of the marshmallow swirl creates a delightful taste that will leave everyone wanting more.
- Its versatility allows you to customize the fudge by adding your favorite toppings or mix-ins, making it suitable for any occasion.
- Not only does it look stunning with its marbled appearance, but it also serves as a crowd-pleasing treat that is perfect for parties, gatherings, or just a sweet indulgence at home.
Marshmallow Swirl Fudge Ingredients
For the Fudge Base
- Semi-sweet chocolate chips – the star ingredient that gives this fudge its rich, chocolatey flavor.
- Sweetened condensed milk – adds creaminess and sweetness, perfect for lusciousness in every bite.
- Unsalted butter – ensures a smooth texture; feel free to substitute with coconut oil for a dairy-free option.
- Vanilla extract – enhances the overall flavor; use pure vanilla for the best taste.
- Salt – a pinch brings out the chocolate's depth; don't skip it!
For the Swirl
- Marshmallow fluff or cream – the fluffy goodness that creates the signature swirl, making your fudge look as delightful as it tastes.
This Marshmallow Swirl Fudge is sure to wow your friends and family!

How to Make Marshmallow Swirl Fudge
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Melt Together: In a saucepan over low heat, melt the semi-sweet chocolate chips, sweetened condensed milk, and unsalted butter. Stir constantly until the mixture is smooth and creamy, about 5-7 minutes.
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Add Flavors: Remove the pan from the heat and stir in the vanilla extract and salt. Mix until everything is fully incorporated, creating a rich chocolate mixture.
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Prepare the Dish: Line an 8×8-inch baking dish with parchment paper, making sure it hangs over the edges for easy removal later. Spread the chocolate fudge mixture evenly into the pan.
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Swirl in Marshmallow: Dollop spoonfuls of your marshmallow fluff or cream over the top of the fudge. Use a knife to gently swirl it into the chocolate, creating a beautiful marbled effect—just don’t overmix!
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Chill: Refrigerate the fudge for at least 2 hours, or until it has firmly set. You’ll know it’s ready when it looks solid and slightly glossy.
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Cut and Serve: Once chilled and set, lift the fudge out using the parchment paper. Cut it into neat squares with a sharp knife and enjoy this homemade treasure!
Optional: Sprinkle a pinch of sea salt on top for a lovely contrast in flavors.
Exact quantities are listed in the recipe card below.
Marshmallow Swirl Fudge Variations
Feel free to unleash your creativity and make this fudge recipe your own with these fun twists and swaps!
- Nutty Crunch: Add 1 cup of chopped nuts, like walnuts or pecans, into the fudge before swirling for that extra crunch and flavor.
- Peanut Butter Fluff: Swirl in creamy peanut butter instead of marshmallow fluff for a delicious flavor pairing—it's like a candy bar in fudge form!
- Coffee Infusion: Stir in 1-2 teaspoons of instant coffee granules into the chocolate mixture for a rich, mocha-inspired treat that coffee lovers will adore.
- Minty Fresh: Incorporate a few drops of peppermint extract into the chocolate mixture for a refreshing twist that’s perfect around the holidays.
- Spiced Delight: Add a pinch of cinnamon or a dash of cayenne pepper to spice things up, creating a tantalizing flavor contrast in your fudge.
- Dairy-Free: Substitute coconut milk or almond milk for sweetened condensed milk, and use vegan chocolate chips to make this fudge dairy-free yet indelibly delicious.
- Seasonal Swirl: Fold in seasonal ingredients like chopped dried cranberries or candied ginger for a festive flair and an explosion of flavor in every bite.
- Fruit Boost: Add a splash of fruit extract, such as raspberry or orange, to introduce a vibrant fruity element that beautifully complements the chocolate base.
Mix and match these variations to delight your taste buds and create your own signature Marshmallow Swirl Fudge!
Make Ahead Options
These Marshmallow Swirl Fudge squares are a time-saver for busy home cooks! You can prepare the fudge base—melting the semi-sweet chocolate chips, sweetened condensed milk, and butter—up to 24 hours in advance. Simply store the cooled mixture in an airtight container in the refrigerator. The marshmallow swirl can also be prepped ahead; dollop it on top just before serving to maintain its fluffy texture. When you're ready to enjoy, spread the prepped fudge into your lined pan and swirl in the marshmallow fluff, then refrigerate until firm. This way, you get a deliciously fresh treat with minimal effort on those hectic days!
What to Serve with Marshmallow Swirl Fudge?
Indulging in this sweet treat is just the beginning of a delightful dessert experience that you can elevate even further.
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Vanilla Ice Cream: Its creaminess adds a lovely cold contrast to the warm fudge. The sweet vanilla notes enhance the chocolate, creating a luscious mouthfeel.
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Fresh Berries: Strawberries or raspberries provide a bright, tart flavor that cuts through the richness, leaving your palate refreshed after each bite. Their vibrant color also makes your dessert plate pop!
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Whipped Cream: A dollop of freshly whipped cream introduces a light, airy component that beautifully complements the rich chocolate. It’s the perfect finishing touch to a decadent dessert.
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Coffee: A warm cup of coffee pairs excellently, balancing the sweetness of the fudge. The bitter notes of coffee contrast brilliantly, making your overall experience more robust.
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Nutty Brownies: Serve with fudgy brownies to create a delightful double chocolate experience. The combination of textures, along with the crispy nuts, amplifies the flavors in an exciting way.
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Chopped Pecans: For a crunchy element, sprinkle some chopped pecans on top of the fudge. Their earthy flavor and texture create a satisfying bite and add depth to each piece.
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Chocolate-Dipped Fruit: Consider serving a platter of chocolate-dipped strawberries or bananas. They harmonize beautifully with the fudge while allowing a playful hand-held treat for your guests.
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Mint Tea: A soothing cup of mint tea brings a refreshing contrast that cleanses the palate between each square of fudge, making each bite feel like a new adventure.
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Sea Salt Caramel Sauce: Drizzling some salted caramel on top adds a rich, savory note that intensifies the overall sweetness. The combination of flavors is simply irresistible.
How to Store and Freeze Marshmallow Swirl Fudge
Room Temperature: Store leftover fudge in an airtight container at room temperature for up to 3 days. Keep it away from direct sunlight to maintain its texture.
Fridge: For extended freshness, place the fudge in the refrigerator. It can last up to 1 week when well-wrapped to prevent it from absorbing odors.
Freezer: Freeze the fudge in an airtight container for up to 2 months. Cut it into squares and layer with parchment paper for easier thawing later.
Reheating: If desired, allow the fudge to sit at room temperature for about 30 minutes before serving, to return it to its deliciously soft state.
Chef's Helpful Tips
- For the best Marshmallow Swirl Fudge, make sure to use low heat while melting the chocolate mixture to prevent it from seizing.
- A common mistake is to skip the salt, which enhances the chocolate's flavor, so be sure to include it for optimal taste.
- When swirling in the marshmallow fluff, use a gentle hand to create a marbled effect without overmixing, as this can lead to a less visually appealing finish.
- Allow the fudge to set in the refrigerator for the full 2 hours to ensure that it cuts into neat squares without crumbling.
Marshmallow Swirl Fudge Recipe FAQs
What type of chocolate chips should I use for the fudge?
Absolutely! I recommend using semi-sweet chocolate chips for a perfect balance of sweetness and chocolate richness. If you prefer a bit of a kick, you can also experiment with dark chocolate chips or even mix in some milk chocolate chips for a different flavor profile.
How should I store leftover fudge?
Very easy! You can keep leftover Marshmallow Swirl Fudge in an airtight container at room temperature for up to 3 days. If storing in the fridge, it can last up to 1 week when well-wrapped to protect it from odors and maintain its taste.
Can I freeze the fudge, and if so, how?
Of course! To freeze your Marshmallow Swirl Fudge, first cut it into squares and layer them with parchment paper in an airtight container. This way, they won’t stick together. You can safely freeze them for up to 2 months. When you’re ready to enjoy, just let them thaw at room temperature for about 30 minutes, and they’ll return to their deliciously soft state!
What should I do if my fudge is too soft?
No worries! If your fudge turns out too soft, it may need more time in the refrigerator to fully set. If it’s overly warm when you swirl in the marshmallow fluff, that can make it softer too. Try putting it back in the fridge for another hour or so, and check its firmness. If it still seems too soft after chilling, you can try adding a little melted chocolate to the mixture to help firm it up, then re-chill.
Can I use dairy-free alternatives for this recipe?
Absolutely! You can easily make dairy-free Marshmallow Swirl Fudge by using dairy-free chocolate chips and substituting the unsalted butter with coconut oil or a dairy-free margarine. Additionally, ensure that the marshmallow fluff or cream you choose is also dairy-free. This way, you can enjoy the fudge without missing out!

Marshmallow Swirl Fudge
Ingredients
Equipment
Method
- In a saucepan over low heat, melt the semi-sweet chocolate chips, sweetened condensed milk, and unsalted butter. Stir constantly until the mixture is smooth and creamy, about 5-7 minutes.
- Remove the pan from the heat and stir in the vanilla extract and salt. Mix until everything is fully incorporated.
- Line an 8×8-inch baking dish with parchment paper, making sure it hangs over the edges for easy removal later. Spread the chocolate fudge mixture evenly into the pan.
- Dollop spoonfuls of your marshmallow fluff or cream over the top of the fudge. Use a knife to gently swirl it into the chocolate, creating a beautiful marbled effect.
- Refrigerate the fudge for at least 2 hours, or until it has firmly set.
- Once chilled and set, lift the fudge out using the parchment paper. Cut it into neat squares with a sharp knife and enjoy.




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