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Marshmallow Swirl Fudge Recipe

4.6 from 63 reviews

This Marshmallow Swirl Fudge is a decadent and creamy treat featuring semi-sweet chocolate, sweetened condensed milk, and marshmallow swirls that create a perfect balance of smoothness and chewy texture. Easy to make with simple ingredients and a no-bake method, this fudge is perfect for gifting or indulging at home.

Ingredients

Scale

Fudge Base

  • 3 cups semi-sweet chocolate chips
  • 1 (14 oz) can sweetened condensed milk
  • 2 tbsp unsalted butter
  • 1/8 tsp salt
  • 1 tsp vanilla extract

Swirl

  • 1 1/4 cups mini marshmallows

Instructions

  1. Prep Your Pan: Line an 8×8-inch square baking pan with parchment paper, leaving an overhang on the sides to easily lift the fudge out later.
  2. Melt Chocolate, Milk, Butter, and Salt: In a medium saucepan over low heat, combine the semi-sweet chocolate chips, sweetened condensed milk, unsalted butter, and salt. Stir constantly until fully melted and smooth, making sure the chocolate does not seize.
  3. Add Vanilla: Remove the pan from heat and stir in the vanilla extract until fully incorporated.
  4. Fold in Marshmallows: Quickly add the mini marshmallows and gently fold them into the chocolate mixture, just enough to create swirls without melting them completely.
  5. Transfer to Pan and Swirl: Pour the mixture into the prepared baking pan and use a spatula to gently swirl the top so the marshmallows peek through the surface.
  6. Chill and Set: Let the pan cool at room temperature for 10 minutes, then refrigerate for at least 2 hours or until the fudge is fully set.
  7. Slice and Serve: Once set, lift the fudge out using the parchment overhang and slice into 16 squares with a buttered knife for clean cuts.

Notes

  • Don’t overheat the chocolate or it will seize; stir constantly on low heat.
  • Add marshmallows last to keep their shape and create beautiful swirls.
  • Line the pan with parchment paper for easy removal and cleaner cuts.
  • Use a buttered knife to slice fudge neatly.
  • Store fudge in an airtight container in the fridge to prevent drying out.
  • Can be made up to 5 days ahead and freezes well for up to 3 months.
  • Substitute dark or milk chocolate chips, or use marshmallow fluff if mini marshmallows are unavailable.
  • Add crushed peppermint or peanut butter chips for variations.
  • Use vegan condensed milk and chocolate for a dairy-free version.

Keywords: marshmallow fudge, chocolate fudge, sweetened condensed milk fudge, easy fudge recipe, holiday fudge