In a large microwave-safe bowl, combine the sweetened condensed milk and white chocolate chips.
14 oz sweetened condensed milk, 2 cups white chocolate chips
Microwave in 30-second intervals, stirring after each, until fully melted and smooth (this should take about 1-2 minutes).
Stir in the peanut butter, vanilla extract, and a pinch of salt.
1 cup creamy peanut butter, 1 tsp vanilla extract, A pinch of salt
Mix until everything is fully incorporated and smooth.
Line an 8x8-inch pan with parchment paper or lightly grease it.
Pour the fudge mixture into the pan, spreading it out evenly.
Refrigerate the fudge for at least 2 hours, or until it sets.
Once firm, cut the fudge into squares and enjoy!