1: Hard boil the eggs and then peel them.
2: Cut the eggs in half and remove the yolks.
3: In a bowl, mix the yolks with mayo, dijon mustard, apple cider vinegar, salt, and pepper.
4: Use green food dye to color the mixture (if desired).
5: Fill the egg whites with the yolk mixture.
6: Decorate with chopped red and yellow peppers to create a Christmas tree appearance.
7: Sprinkle grated parmesan on top for extra flavor.
