Line a 9×13 pan with wax paper. Place the white chocolate and sweetened condensed milk in a microwave safe bowl and microwave it at 30 second intervals, stirring in between, until it is melted and smooth. Gently stir in about half of the crushed cookies. Press into the prepared pan, then scatter the remaining crushed cookies evenly on top and press them in lightly. Place the pan in the refrigerator for about 2 hours, or until your fudge is set. Remove from pan by lifting the edges of the paper, and cut into desired sized squares. Store in an airtight container in the refrigerator.