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Easy Marshmallow Swirl Fudge You’ll Love!

This Marshmallow Swirl Fudge is one of the easiest holiday treats you can make. Creamy, rich, silky-smooth chocolate fudge gets beautifully swirled with soft marshmallow ribbons to create a dessert that looks fancy but takes only minutes to prepare. No baking, no complicated technique—just melt, swirl, chill, and enjoy. Perfect for Christmas trays, gifting, parties, or whenever you want a delicious homemade sweet, this fudge delivers deep chocolate flavor, soft marshmallow creaminess, and the perfect melt-in-your-mouth texture.
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Prep Time 10 minutes
chill time 3 hours
Total Time 3 hours 10 minutes
Servings: 36 squares
Ingredients Equipment Method Notes

Ingredients
  

For the Fudge Base
  • 3 cups Semi-sweet chocolate chips
  • 1 can 14 oz Sweetened condensed milk
  • 4 tablespoons Butter
  • 1 teaspoon Vanilla extract
  • 1/4 teaspoon Salt
For the Marshmallow Swirl
  • 1 cup Marshmallow creme or marshmallow fluff
  • 1 cup Mini marshmallows optional for extra texture

Equipment

  • 8×8 or 9×9 baking pan
  • Parchment paper
  • Microwave-safe bowls or stovetop pot
  • Rubber spatula
  • Knife or skewer (for swirling)
  • Measuring cups
  • Refrigerator space

Method
 

  1. 🔹 PART 1 — PREP THE PAN
Step 1 — Line the Pan
  1. Line your baking pan with parchment paper.
  2. Allow extra paper to hang over the sides like handles.
  3. This makes removing the fudge super easy later.
  4. 🔹 PART 2 — MAKE THE FUDGE BASE
Step 2 — Melt Chocolate, Butter & Condensed Milk
  1. Option A — Microwave
  2. Add chocolate chips, butter, and condensed milk to a bowl.
  3. Heat in 20–30 second intervals, stirring each time, until fully melted and smooth.
  4. Option B — Stovetop
  5. Add ingredients to a pot over low heat.
  6. Stir constantly until smooth and creamy.
  7. The mixture should look glossy and very thick.
Step 3 — Add Vanilla & Salt
  1. Stir in vanilla extract.
  2. Add salt to balance sweetness.
  3. Mix until fully combined.
  4. 🔹 PART 3 — ASSEMBLE THE FUDGE
Step 4 — Pour Fudge Into Pan
  1. Spread the warm fudge mixture into the lined pan.
  2. Smooth the top with a spatula.
Step 5 — Add Marshmallow Swirl
  1. Dollop spoonfuls of marshmallow creme on top of the fudge.
  2. Use a knife or skewer to swirl it gently through the chocolate.
  3. Do not overmix!
  4. You want visible creamy white ribbons.
Step 6 — Optional Mini Marshmallows
  1. Scatter mini marshmallows across the top for extra texture.
  2. Press them very gently into the surface.
  3. 🔹 PART 4 — CHILL & CUT
Step 7 — Chill Until Set
  1. Refrigerate for 2–3 hours until the fudge is firm.
Step 8 — Slice Into Squares
  1. Lift fudge using parchment handles.
  2. Place on cutting board.
  3. Use a warm knife for clean slices.

Notes

🧊 Storage
Room Temperature
Store in an airtight container for 5–7 days.
Refrigerator
Keeps up to 2 weeks.
Freezer
Freeze up to 2 months.
Thaw in fridge before serving.
🥄 Variations
1. White Chocolate Marshmallow Swirl Fudge
Replace chocolate chips with white chocolate.
2. Peppermint Marshmallow Fudge
Add crushed peppermint candies on top.
3. S’mores Fudge
Add mini marshmallows + graham cracker pieces.
4. Cookies & Cream Fudge
Fold crushed chocolate cookies into the fudge base.
5. Peanut-Free Nutty Flavor (No Nuts Used)
Stir in sunflower seed butter for a nutty taste without actual nuts.
6. Salted Marshmallow Fudge
Sprinkle sea salt flakes on top before chilling.
❓ 10 FAQs
1. Why is my fudge grainy?
Chocolate overheated — melt slowly and stir often.
2. Why didn’t my fudge set?
Needs more chilling time — refrigerate longer.
3. Can I use milk chocolate?
Yes, but fudge will be softer and sweeter.
4. Can I use marshmallows instead of marshmallow creme?
Yes — melt them slightly for easier swirling.
5. Why did my swirl sink into the fudge?
Marshmallow creme was too warm — cool it slightly before swirling.
6. Can kids eat this?
Yes — completely alcohol-free and kid-safe.
7. Can I make a double batch?
Yes — use a 9×13 pan.
8. Should I freeze before slicing?
You can — it makes cutting cleaner.
9. Can I add food coloring?
Yes — add red or green for Christmas swirl fudge.
10. Can I ship this fudge?
Yes — as long as weather isn’t hot.
🏁 Conclusion
This Easy Marshmallow Swirl Fudge is rich, creamy, and full of sweet marshmallow ribbons that make it look as beautiful as it tastes. With minimal ingredients, no baking, and foolproof preparation, it’s the perfect dessert for holidays, gifting, parties, or anytime you want something sweet without hassle. Each square delivers deep chocolate flavor, soft marshmallow swirl, and smooth texture that melts in your mouth. Simple, festive, and absolutely unforgettable.