Place milk chocolate and white chocolate in two separate microwaveable bowls and melt each one in the microwave.
Line a baking sheet with parchment paper and pour the milk chocolate down into the centre of it. Smooth the milk chocolate down with a spoon until it's only about 1/8" thick.
Fill a squeeze bottle about half full with white chocolate and set aside. Pour the rest of the white chocolate over the milk chocolate, covering the milk chocolate as much as possible.
Smooth the white chocolate out with a spoon. Don't worry about it if you get a few swirls of milk chocolate in the white chocolate. This just make the "mummies" look like they have bandages that are a bit dirty and tattered.
Take the squeeze bottle and create zig zags all over the white chocolate.
Quickly place candy eyeballs in sets of two all over the bark, pressing them into the warm chocolate.
Place the baking sheet in the fridge for about 10 minutes.
Break up the bark, trying to get one set of eyeballs on each piece.
Share and enjoy!