01 - Line an 8x8 inch square baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium saucepan over low heat, combine chopped white chocolate, sweetened condensed milk, and butter. Stir constantly until the mixture is smooth and the chocolate is fully melted.
03 - Remove from heat and stir in peppermint extract and vanilla extract until evenly combined.
04 - Pour the mixture into the prepared pan and smooth the top evenly with a spatula.
05 - Evenly sprinkle crushed peppermint candies over the surface, gently pressing them into the fudge.
06 - Refrigerate for at least 2 hours, or until the fudge is completely set.
07 - Lift the set fudge from the pan using the parchment paper overhang and cut into 36 squares with a sharp knife.