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Marshmallow Swirl Fudge Recipe

5 from 52 reviews

This nostalgic Marshmallow Swirl Fudge recipe combines rich semi-sweet chocolate with sweetened condensed milk and a delightful swirl of mini marshmallows for a melt-in-your-mouth treat. Quick to make with just one pot and no candy thermometer needed, it is perfect for gifting or holiday celebrations.

Ingredients

Scale

Main Ingredients

  • 3 cups semi-sweet chocolate chips
  • 1 (14 oz) can sweetened condensed milk
  • 2 tbsp unsalted butter
  • 1 tsp vanilla extract
  • 1/8 tsp salt
  • 1 1/4 cups mini marshmallows

Instructions

  1. Prep Your Pan: Line an 8×8-inch square baking pan with parchment paper, leaving a little overhang on the sides for easy lifting later.
  2. Melt Chocolate, Milk, Butter, and Salt: In a medium saucepan over low heat, combine the chocolate chips, sweetened condensed milk, butter, and salt. Stir constantly until everything is fully melted and the mixture is smooth to avoid seizing.
  3. Add Vanilla: Remove the saucepan from heat and stir in the vanilla extract until well combined.
  4. Fold in Marshmallows: Quickly fold the mini marshmallows into the warm chocolate mixture gently so they swirl without fully melting, preserving texture and visual appeal.
  5. Transfer to Pan and Swirl: Pour the fudge mixture into the prepared pan and gently swirl the top with your spatula so some marshmallows peek through the surface.
  6. Chill and Set: Allow the fudge to cool at room temperature for 10 minutes, then place it in the refrigerator for at least 2 hours or until fully set.
  7. Slice and Serve: Once set, lift the fudge out using the parchment paper and slice into 16 squares with a buttered knife for clean cuts. Serve and enjoy!

Notes

  • Don’t overheat the chocolate; stir constantly on low heat to prevent seizing.
  • Add marshmallows last and fold in gently for the signature swirl without complete melting.
  • Line the pan with parchment paper to easily lift and cut the fudge.
  • Use a buttered knife for clean, neat fudge squares.
  • Store fudge in an airtight container in the fridge for up to 7 days, or freeze for up to 3 months.
  • Substitute semi-sweet chips with dark or milk chocolate, or use marshmallow fluff if mini marshmallows are unavailable.
  • Add crushed peppermint, chopped nuts, or peanut butter chips for texture and flavor variations.
  • Use vegan sweetened condensed milk and chocolate chips to make a dairy-free version.

Keywords: marshmallow fudge, chocolate fudge, holiday fudge, Christmas dessert, easy fudge recipe, no thermometer fudge, chocolate and marshmallow dessert