Hard-boil the eggs for 10 minutes. Pour cold water over the eggs and peel them. Halve the hardboiled eggs lengthwise and carefully remove the yolks.
Mash the yolks in a bowl with a fork. Add mayonnaise, Dijon mustard, Worcester sauce, pale vinegar, Castello Creamy Blue and chopped parsley and stir until combined.
Season to taste with salt and ground pepper.
Fill the eggs with the filling using a spoon or a piping bag.
Arrange the eggs on a bed of baby spinach, sprinkled with pomegranate seeds and drizzled with balsamic vinegar glaze.