The ultimate egg salad sandwich recipe.

1. In a mixing bowl, combine the chopped hard-boiled eggs, mayonnaise, Dijon mustard, chopped chives, chopped parsley, and garlic powder. Mix until well combined.
2. Season the egg salad mixture with salt and pepper to taste. Adjust seasoning according to your preference.
3. Toast the slices of bread until golden brown and crisp.
4. To assemble the sandwiches, place a lettuce leaf on one slice of toasted bread. Spoon a generous amount of the egg salad mixture over the lettuce.
5. If desired, add sliced tomatoes and/or avocado on top of the egg salad.
6. Top with another slice of toasted bread to complete the sandwich.
7. Repeat with the remaining ingredients to make additional sandwiches.
8. Slice the sandwiches diagonally and serve immediately.

Enjoy your delicious homemade egg salad sandwiches!