Creating a delicious Waldorf Salad is simple when you follow these straightforward steps:

1. Prepare Ingredients: Begin by washing and dicing the apples, celery, and grapes (if using). Chop the walnuts coarsely.
2. Mix Dressing: In a small bowl, combine the mayonnaise, lemon juice, and sugar. Mix well until smooth.
3. Combine Ingredients: In a large mixing bowl, combine the diced apples, celery, walnuts, and grapes. If you are using raisins, add them as well.
4. Add Dressing: Pour the dressing over the mixture and gently toss to ensure everything is evenly coated.
5. Taste and Adjust: Add salt and pepper to taste. Adjust the sweetness by adding more sugar if desired.
6. Chill: For best flavor, cover the bowl with plastic wrap and refrigerate for at least 30 minutes before serving to allow the flavors to meld.
7. Serve: Line a serving platter with lettuce leaves if desired. Spoon the salad onto the lettuce, and enjoy!

These steps will guide you in creating this incredible salad effortlessly.