Boil or Scramble the Eggs: Start by boiling water in a saucepan. Once the water reaches a rolling boil, gently add the eggs and boil for about 10-12 minutes for hard-boiled eggs. Alternatively, you can scramble the eggs in a nonstick skillet—whisk them first in a bowl and cook in a small amount of butter over medium heat until fluffy.

Prepare the Egg Mixture: Once the eggs are cooked, rinse under cold water (for boiled eggs) and peel off the shells. Chop the boiled eggs into small pieces and add them to a mixing bowl. For scrambled eggs, just place them directly into the bowl.

Make the Egg Salad: Add mayonnaise, Dijon mustard, salt, and pepper to the bowl with the eggs. Mix well until all ingredients are combined, and the egg mixture is creamy.

Toast the Bread: While you prepare the egg mixture, toast your slices of bread until golden brown—use butter on the skillet for added flavor if desired.

Assemble the Sandwich: Take a slice of toasted bread, add a generous serving of the eggs, and top with fresh lettuce if using. Place another slice of bread on top to complete the sandwich.

Serve and Enjoy: Cut the sandwich in half or quarters for easy eating, and serve this delightful creation at your next family gathering or enjoy it on your own.