Here's how to make a classic egg salad sandwich! All you need are chopped hard boiled eggs, green onion, celery, mayonnaise and a dash of curry powder. Serve on toasted bread for lunch. An egg salad sandwich is one of the easiest sandwiches in the world to make, especially if you have hard boiled eggs already made. It’s also a great way to use up leftover eggs after Easter. HOW TO MAKE AN EGG SALAD SANDWICH How do you make an egg salad sandwich? Just chop up some hard boiled eggs, add little chopped celery for crunch, some green onions or chives for the green factor, a dash of salt and pepper for seasoning, and a spoonful of mayonnaise to bind everything together. Easy! EGG SALAD SANDWICH TIPS: Add a dash of curry powder. There is one more ingredient that will give your simple egg salad a special zing, and that is a dash of yellow curry powder. Not only will the curry powder give your egg salad sandwich a gentle spicy lift and it will give it a bit more color as well. To mayo or no...