Melt the dark and milk chocolate together in a double boiler until smooth, stirring gently.

Cool the melted chocolate slightly after removing it from the heat.

Coat the inside of the silicone egg molds with the melted chocolate using a spoon, ensuring an even layer.

Place them in the refrigerator to set for about 10 minutes.

Reinforce the shells by adding a second layer of chocolate once the first has set.

Return them to the refrigerator to firm up again.

Combine powdered sugar, light corn syrup, softened butter, vanilla extract, and milk in a mixing bowl.

Mix until smooth and creamy.

Add yellow food coloring if desired and mix until evenly colored.

Fill each chocolate shell with the creme filling, leaving a little space at the top for sealing later.

Seal the tops of the eggs with any remaining melted chocolate, smoothing it over the filling.

Chill the filled eggs in the refrigerator for another 10-15 minutes to set completely.

Remove the eggs carefully from the molds once set and enjoy your delicious homemade Cadbury Creme Eggs!