Place eggs in a single layer in a saucepan and cover with cold water by about an inch.
Bring to a boil over medium-high heat.
Once boiling, reduce heat to a gentle simmer and cook for 10–12 minutes.
Transfer eggs to an ice bath for at least 5 minutes to cool.
Tap and roll each egg to crack the shell, then peel under cool running water.
Pat eggs dry and chop to your desired size.
Mixing
In a bowl, combine mayonnaise and Dijon mustard.
Stir in green onion and parsley.
Add chopped eggs to the dressing and fold gently.
Season with salt and pepper to taste. Adjust mayo if preferred.
Serving
Chill for 15–30 minutes for best flavor meld, or serve immediately.
Notes
This egg salad is versatile; enjoy it on sandwiches, crackers, or over mixed greens. Storage: Refrigerate in an airtight container for 3–4 days. Does not freeze well.