In a big pot place the eggs and cover them with water. Boil the eggs and let them cook for 10-15 minutes. You can always take one out and see if the middle of the egg is done. Leave them to cool then peel the eggs. To speed up this process you can place them in cold water.
Place the eggs on a chopping board and cut them into bigger pieces. Transfer them to a medium-sized bowl and squeeze them with a fork.
4 eggs
In the same bowl add dill, Greek yogurt, mayonnaise, mustard, kosher salt, black pepper and mix it all together.
½ tsp dried dill, 2 tbsp Greek yogurt, 1 tbsp mayonnaise, ½ tbsp Dijon mustard
Assemble the sandwich:
Take two slices of bread slices, if you want you can toast them previously and lay lettuce leaves on the bread. Add a few tbsp of the egg salad over the lettuce, season with black pepper.
Kosher salt and Black pepper to taste, 4 slices of bread, lettuce
Add previously chopped onion circles and fresh dill and cover with the other bread slice. Repeat the same procedure for the other sandwich.