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This Marshmallow Swirl Fudge captures the perfect balance of rich, creamy chocolate with soft, sweet marshmallow ribbons throughout each bite. It’s an effortless treat that requires no baking or special equipment, making it ideal for satisfying your sweet tooth with minimal fuss. The smooth marshmallow swirls add a delightful texture contrast that makes every piece irresistible.
I first made this fudge for a last-minute holiday gathering and was amazed how everyone kept coming back for more. It quickly became a go-to recipe whenever I want something indulgent but hassle-free.
Ingredients
- Semi-sweet chocolate chips: Two cups for a smooth chocolate base, choose high-quality chips for best flavor
- Sweetened condensed milk: One 14-ounce can to add creaminess and sweetness, go for a brand with minimal additives
- Unsalted butter: Two tablespoons melted for richness, fresh butter improves texture
- Vanilla extract: One teaspoon to brighten the chocolate flavor, pure vanilla extract is worth it here
- Salt: Quarter teaspoon to balance sweetness and enhance depth
- Marshmallow fluff or marshmallow cream: One cup for those soft, gooey swirls, avoid mini marshmallows as they will melt fully and lose the swirl effect
Step-by-Step Instructions
- Sauté the Chocolate Mixture:
- In a medium saucepan over low heat, combine the semi-sweet chocolate chips, sweetened condensed milk, and melted butter. Stir constantly until everything melts together smoothly. This slow melting prevents burning and ensures a silky texture.
- Add Flavor Enhancers:
- Remove the pan from heat and stir in the vanilla extract and salt thoroughly. These ingredients amplify the overall taste and add complexity beyond just sweetness.
- Pour into Pan:
- Prepare an 8 by 8-inch baking dish by lining it with parchment paper. Pour the chocolate mixture into the dish and spread it evenly using a spatula to create a uniform thick layer.
- Create the Marshmallow Swirl:
- Drop spoonfuls of marshmallow fluff across the surface in random spots. Using a knife, gently swirl the marshmallow into the chocolate mixture by dragging the knife lightly in sweeping motions. Be careful not to overmix to keep the distinct swirl effect.
- Chill to Set:
- Place the fudge in the refrigerator for at least two hours until firm. Chilling time allows the fudge to harden for clean cutting and the flavors to meld.
- Cut and Serve:
- Once fully set, lift the fudge out with the parchment paper. Cut into squares using a sharp knife and enjoy immediately or store appropriately.
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My favorite part is the marshmallow swirl which adds a lovely softness that contrasts the dense chocolate. One holiday, my kids helped me swirl the marshmallow, and it became a cherished family tradition we look forward to every year.
Storage Tips
Store leftovers in an airtight container in the refrigerator where they will keep fresh for up to one week. For longer storage, wrap the fudge well and freeze it for up to three months. When ready to eat, thaw in the fridge overnight to maintain the soft texture.
Ingredient Substitutions
- For a dairy-free version, substitute with dairy-free chocolate chips and coconut-based sweetened condensed milk to keep the creamy consistency.
- To make the fudge more chocolatey, fold in half a cup of chopped dark chocolate before adding marshmallow fluff.
- Add texture by stirring in crushed cookies or chopped nuts before chilling for a crunchy twist.
Serving Suggestions
- Serve this fudge plain as a classic treat or sprinkle with crushed graham crackers on top for a s’mores flavor.
- Lightly torch the marshmallow swirl after chilling for a caramelized finish reminiscent of toasted marshmallows at a campfire.
- Pair with a cup of coffee or hot cocoa for a perfect indulgent snack.
Cultural Context
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Fudge has been a beloved American confection since the late 19th century, traditionally made with sugar, butter, and milk. The addition of marshmallow fluff, a mid-20th century invention, adds a modern creamy twist that gives this classic candy a fresh texture and sweet appeal. Swirling marshmallow into chocolate combines the nostalgic holiday flavors of s’mores and cozy winter treats.
Recipe FAQs
- → What’s the best marshmallow type for the swirl?
Marshmallow fluff works best as it creates smooth, visible ribbons without melting completely into the fudge.
- → Can I make this fudge dairy-free?
Yes, substitute dairy-free chocolate chips and use coconut condensed milk for a dairy-free version.
- → How do I create the swirl effect?
After spreading the chocolate base, drop spoonfuls of marshmallow fluff on top and gently drag a knife through to form visible swirls.
- → Is baking or special equipment required?
No baking or candy thermometer needed—just melt ingredients gently on the stove, then chill to set.
- → How long should the fudge chill before cutting?
At least 2 hours in the fridge to ensure it sets firmly for clean, perfect squares.
- → Any tips for extra flavor?
Try lightly torching the top for a caramelized marshmallow finish or adding crushed graham crackers for a s’mores-inspired treat.