Steam or boil eggs until they are hard-boiled

Peel the eggshell off the egg and cut in half lengthwise

Chop egg whites with a Food Chopper for small square pieces

Add egg whites to the yolk bowl

Chop Onion slice into small pieces

Put in Mayonnaise, Dijon Mustard, and Chopped Onion in with the Egg Mixture and mix together

Add Salt and Pepper to taste