Step 1: Hard-Boil the Eggs: Place the eggs in a saucepan and cover with cold water. Bring to a boil, then remove from heat, cover, and let stand for 12 minutes. Transfer the eggs to an ice bath to cool completely. This prevents a green ring from forming around the yolks.
Step 2: Peel and Dice the Eggs: Once cooled, gently peel the eggs and dice them into small, uniform pieces. A sharp knife ensures clean cuts.
Step 3: Prepare the Chicken: Ensure the cooked chicken is cooled. Shred or dice it into bite-sized pieces. Pre-cooked rotisserie chicken offers a convenient option.
Step 4: Combine the Ingredients: In a large bowl, combine the shredded chicken, diced eggs, celery, and red onion.
Step 5: Make the Dressing: In a separate small bowl, whisk together the mayonnaise, Dijon mustard, lemon juice, salt, and pepper. Adjust seasonings to taste. For a sweeter flavor, a pinch of sugar can be added.
Step 6: Combine and Chill: Pour the dressing over the chicken and egg mixture. Gently fold until all ingredients are well coated. Avoid overmixing to prevent a mushy texture.
Step 7: Chill Before Serving: Cover the bowl with plastic wrap and refrigerate for at least 30 minutes to allow the flavors to meld. This step enhances the overall taste.
Step 8: Serve: Serve the chicken and egg salad on croissants, lettuce cups, or with crackers. Garnish with fresh parsley.
For a lighter version, substitute Greek yogurt for half of the mayonnaise. To add a hint of sweetness, consider incorporating chopped grapes or dried cranberries.