usually 12 halves of an egg are enough for a plate, but lay as many eggs as you have a plate
+ 100g for some eggs on top
Step by step
Boil the eggs for 10 minutes, then leave them for about 20 minutes, even more in cold water, then peel them.
Cut them in half, put the gabions in a separate bowl.
Finely chop the onion and fry in oil until lightly browned.
Put the onion, mayonnaise, a little salt and pepper over the yolks. With a fork, mix everything well and mix. Taste the salt and pepper, if you like, add a little more garlic.
Put the resulting mixture back in the egg halves, press a little and distribute evenly over the entire surface.
And here you can already beautify them and do as you like best - you can put them with the filling down and grease them with a little mayonnaise and greens - or simply, leave them as they are, grease them with mayonnaise and put some greens on them.
If you have time and inspiration you can do many things - ladybugs, bees, mice ... etc.
(of 6 eggs)