Melt the dark and white chocolate in separate containers according to package directions
Drizzle chocolate into each mould and freeze for 1 minute.
Add ½ teaspoon of co-ordinating chocolate and use a pastry brush to an even layer.
Freeze for 1 minute, then repeat this process one more time.
Remove shells from moulds and neaten the edges with a sharp knife.
Add melted chocolate to the edge and ‘glue’ 2 half of the shells together.
Fill in any gaps with melted chocolate and small brush. Freeze for 1 minute to set.
Add the shells to an empty egg container so they stand upright.
Warm a small sharp knife under hot water and dry.
Cut the tops off the egg shells, just like a soft boiled egg.
Take ⅓ of the marshmallow creme and add to a bowl.
Mix in yellow food coloring until the yellow matches the color of egg yolk.
To a microwave-safe bowl add the rest of the marshmallow creme and microwave for 20 seconds to soften.
Spoon into a small disposable piping bag or ziptop bag. Snip of a corner and pipe the white marshmallow creme into the egg shells with the tops removed. Fill to the top.
Add a small amount of yellow marshmallow to the center.