Cream together: 1/2 cup corn syrup, 1/4 cup butter (at room temp.) and 1 tsp vanilla; add 3 cups icing sugar and beat until incorporated.
Remove roughly 1/3 mixture into separate bowl; add yellow food colouring (to desired hue). - (obviously this is only if you want it to actually look like an egg)
Put the 2 bowls in fridge to "firm up" ; remove yellow mixture from fridge, form into "yolk" balls on parchment paper and place back in fridge (or freezer). Once set up, scoop some white filling and flatten into circle; place yellow ball in centre and wrap around. Place back in fridge.
Meanwhile, melt 1 (12oz) bag chocolate chips in short bursts in microwave (or melt in pot on stove, totally your call). Using a fork, toothpick or skewer *(or spoon, that's what I ended up doing), dip filling into melted chocolate and freeze. Repeat as often as you'd like for desired chocolatey thickness.