Line an 9x13 pan with parchment or 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. Press into the prepared pan, then scatter the candy corn on top and press them in lightly. Place the pan in the refrigerator for about 1 hour, or until your fudge is set, then cut into squares and serve. Store refridgerated for up to a week.