Line an 8-inch square baking dish with parchment paper or aluminium foil and set aside.
In a microwave-safe bowl, combine the white chocolate chips and sweetened condensed milk.
Microwave on high in 30-second intervals, stirring after each interval until the chocolate is melted and the mixture is smooth.
Add the crushed freeze-dried strawberries, butter, and vanilla extract to the melted chocolate mixture. Stir until well combined and the strawberries are evenly distributed.
Pour the fudge mixture into the prepared baking dish and spread it out evenly.
Let the fudge cool at room temperature for about 2 hours or until firm.
Once the fudge is firm, lift it out of the baking dish using parchment paper or aluminium foil.
Cut the fudge into squares or desired shapes and serve.