8 cups popped popcorn--I think you could use 16 cups. It wouldn't be so coated but would still be good.
1 1/3 cups white chocolate disks or white chocolate chips, melted
small amount of semi-sweet chocolate, melted
Pour melted white chocolate over popped corn, stir to coat. Let cool and then drizzle dark chocolate over the top.
Only make one batch because you will want to eat it all.
This would be nice holiday treat to give to neighbors.