Instructions

Prepare: Line an 8-inch square baking pan with parchment paper.

Melt: In a saucepan over low heat, melt the sweetened condensed milk, butter, chocolate chips, and salt. Stir continuously until smooth.

Add Flavor: Remove from heat and stir in the vanilla extract.

Optional: If desired, fold in chopped nuts.

Pour: Transfer the mixture into the prepared baking pan, spreading evenly.

Chill: Refrigerate for at least 2 hours, or until firm.

Cut: Lift the fudge from the pan using the parchment paper, then slice into squares and serve.