Step 1: Prepare the Pan

1. Line an 8×8-inch baking dish with parchment paper, leaving some overhang for easy removal.
2. This helps prevent sticking.

Step 2: Melt the Chocolate

1. In a medium saucepan over low heat, combine the semisweet chocolate chips and sweetened condensed milk.
2. Stir continuously until the chocolate is completely melted and smooth.

Step 3: Add Flavorings

1. Remove the saucepan from heat and stir in the vanilla extract and salt. Mix until well combined.
2. Gently fold in the mini marshmallows and chopped nuts (if using) until evenly distributed.

Step 4: Pour and Set

1. Pour the fudge mixture into the prepared baking dish, spreading it evenly.
2. Refrigerate for at least 2 hours or until firm.

Step 5: Cut and Serve

1. Once set, lift the fudge out of the pan using the parchment paper overhang.
2. Cut into small squares or rectangles for serving.
3. Serve chilled or at room temperature and enjoy your Easy Marshmallow Fudge!