Creating Creamy Deviled Egg Macaroni Salad is simple if you follow these steps:

1. Cook the macaroni: In a large pot, bring water to a boil. Add the elbow macaroni and cook until al dente, according to package instructions. Drain and rinse with cold water to cool.
2. Hard boil the eggs: In a separate saucepan, place the eggs and cover them with water. Bring to a boil, then remove from heat. Cover and let sit for 10-12 minutes. Drain and cool in ice water before peeling.
3. Prepare the dressing: In a bowl, whisk together the mayonnaise, Dijon mustard, white vinegar, olive oil, onion powder, garlic powder, and a pinch of salt and pepper until smooth.
4. Combine the ingredients: In a large mixing bowl, combine the cooled macaroni, diced celery, green bell pepper, and red onion.
5. Add chopped eggs: Peel the hard-boiled eggs and chop them into chunks. Gently fold the eggs into the macaroni mixture.
6. Incorporate the dressing: Pour the dressing over the macaroni salad and mix until everything is well-coated.
7. Chill: Cover the bowl and refrigerate for at least 30 minutes. This allows the flavors to meld beautifully.
8. Garnish and serve: Before serving, top with chopped chives for an added touch of freshness.

These steps will guide you to create this incredible macaroni salad with ease.