Place the eggs in a saucepan in a single layer and fill with water to cover the eggs with 3cm of water. Leave the pan uncovered. Turn the heat to high and bring the water to a rolling boil. Remove from the heat. Depending on how cooked you like your hard-boiled eggs, the eggs should be done perfectly after sitting for 10 minutes. Immediately transfer eggs to a bowl filled with ice and water and cool. Peel the eggs as you run them under cold water.
Coarsely chop the eggs in a medium-sized bowl and set them aside.
In a small bowl mix the mayonnaise with the Dijon mustard, salt and chilli flakes. Add more seasonings to taste if needed.
Mix the mayonnaise into the mashed eggs and add the chopped dill.
Toast the bread and spread with butter if desired. Divide the egg salad evenly among the 4 pieces of bread and top with micro and baby tomatoes if desired.
Recipe by SAPeople South African Recipes at https://tastyrecipes.staging.sapeople.com/egg-salad-sandwich/