Boil and Cool the Eggs. Start by hard boiling your eggs if they are not already cooked. Use my air fryer hard boiled eggs or Instant Pot hard boiled eggs recipe or you can even make this Egg Loaf for even easier prep. Once they are done, cool them completely and peel them.
Chop the Eggs. Roughly chop the peeled eggs and place them in a medium mixing bowl. You can chop them finely for a smoother salad or leave them a little chunkier for more texture.
Make the Egg Salad. Add the mayonnaise, Dijon mustard, diced celery, onion, lemon juice, salt, black pepper, and paprika to the bowl. Stir gently until everything is well combined and creamy.
Assemble the Sandwiches. Lay out your slices of bread. Add lettuce if using, then spoon the egg salad evenly onto the bread. Top with the remaining slices.
Serve. Cut each sandwich in half and serve immediately. Pair with chips, fruit, or a simple salad for an easy meal.