Line an 8x8-inch baking dish with parchment paper, making sure the paper hangs over the sides for easy removal.
Combine the sugar-free sweetened condensed milk and sugar-free white chocolate chips in a medium non-stick skillet.
Warm over medium heat, stirring constantly, until the chocolate is melted and the mixture is smooth.
Stir in the canned pumpkin, pumpkin pie spice, vanilla extract, and a dash of salt. Continue stirring until fully combined.
Pour the mixture into the prepared pan and spread the fudge mixture evenly.
Place the pan in the freezer for at least 2 hours or until the fudge is firm.
Once the fudge is fully set, lift it out of the pan using the parchment paper, slice it into squares, and enjoy!