Easy Marshmallow Swirl Fudge You’ll Love!

I’ve always had a weakness for quick, no-fuss fudge recipes, and this marshmallow swirl version became an instant favorite once I figured out how to get those perfect ribbons of gooey marshmallow. My first batch was a bit chaotic—the marshmallow melted too much and blended completely into the chocolate, leaving me with a solid block of regular fudge. After trying again and swirling it in gently at the very end, I finally nailed that gorgeous marbled look and soft, creamy texture that makes every square irresistible.

Ingredients

For the Fudge

• 3 cups semi-sweet chocolate chips
• 1 (14 oz) can sweetened condensed milk
• 3 tablespoons unsalted butter
• 1 teaspoon vanilla extract
• Pinch of salt

For the Swirl

• 1 ½ cups mini marshmallows

Optional Add-Ins

• Crushed cookies
• Chopped nuts
• White chocolate drizzle
• Sprinkles

Instructions

1. Prep the Pan

Line an 8×8-inch pan with parchment paper, leaving overhang for easy lifting later.
Lightly grease the parchment.

2. Melt the Fudge Base

In a saucepan over medium-low heat, combine chocolate chips, sweetened condensed milk, butter, and salt.
Stir continuously until everything melts into a smooth, glossy mixture.
Remove from heat and mix in vanilla.

3. Add the Marshmallow Swirl

Let the fudge cool for 1–2 minutes—not too hot, not too cool.
Fold in the mini marshmallows gently.
Don’t overmix—you want defined swirls.
If desired, reserve a handful of marshmallows to press on top.

4. Transfer to the Pan

Spread the mixture evenly into your prepared pan.
Use a spatula to create visible swirls or lift some marshmallows to the surface.

5. Chill

Refrigerate for at least 2 hours, or until firm enough to slice.

6. Slice & Serve

Lift the fudge out with the parchment and cut into squares using a warm knife.

Preparation & Cooling Time

• Prep Time: 10 minutes
• Chill Time: 2 hours
• Total Time: 2 hours 10 minutes
• Servings: 16 pieces

@alpineella

Serving Suggestions

This fudge pairs wonderfully with:

• Hot chocolate or coffee
• A holiday dessert board
• Ice cream sundaes (cut into tiny cubes!)

Serve chilled for clean slices, or let it warm slightly for softer, meltier bites.

Storage

• Store in an airtight container for 1 week in the fridge.
• Freeze for up to 2 months—just thaw in the fridge before serving.

FAQs

Why did my marshmallows melt completely?

Your fudge mixture was too hot. Let it cool briefly before folding in the marshmallows.

Can I use marshmallow fluff instead?

Yes—drop dollops of fluff and swirl with a knife. It creates a prettier, more dramatic swirl.

Can I use white chocolate instead of dark?

Absolutely, but white chocolate sets softer, so chill it a bit longer.

Does this fudge need a candy thermometer?

Nope! This is a simple, no-boil fudge—perfect for beginners.

Can I add mix-ins like nuts or dried fruit?

Yes, but add them before the marshmallow swirl so the ribbons stay visible.

A Little Bite of Swirly Sweet Bliss

This Marshmallow Swirl Fudge is one of those desserts that looks impressive but takes almost no effort, which is exactly why I love making it. The creamy chocolate and pockets of soft marshmallow make each piece a little nostalgic and a lot delicious. I hope it brings the same joy to your kitchen that it brings to mine—happy swirling!