A creamy egg mayonnaise mixture paired with fresh, peppery watercress brings richness and bite in perfect balance for a timeless favorite sandwich.
Peel and chop hard-boiled eggs.
In a large mixing bowl, combine chopped eggs, watercress, mayonnaise, mustard, salt and pepper. Stir until well combined.
Spread egg mixture over 4 bread slices. Cap with remaining bread slices. Trim sandwich crusts and slice sandwich in half diagonally. Serve.