01 - Line an 8 x 8 inch baking pan with parchment paper, ensuring an overhang for easy removal.
02 - In a medium saucepan over low heat, stir together the white chocolate, sweetened condensed milk, and unsalted butter until fully melted and smooth.
03 - Remove the mixture from heat and blend in vanilla extract, ground ginger, cinnamon, and salt until thoroughly mixed.
04 - Gently fold in the chopped ginger snap cookies, distributing evenly throughout the mixture.
05 - Pour the prepared fudge into the lined pan and smooth the surface with a spatula.
06 - Evenly sprinkle crushed ginger snap cookies atop the fudge, pressing lightly.
07 - Refrigerate for at least 2 hours, or until the fudge is completely firm.
08 - Lift the chilled fudge out using the parchment paper, cut into 24 squares, and serve.