Cover eggs in a saucepan with cold water and bring to a boil; simmer for ten minutes, then remove from heat.
Drain hot water off and cover with ice water until cool, then peel.
Split eggs, and mash yolks with a fork in a small bowl.
Mix in the mayo, Dijon, minced pickled onions, salt and black pepper until smooth.
Fill cavities and garnish as you like.