Creating Lunch Lady Potato Salad is straightforward when you follow these steps:

1. Prepare the Potatoes: Wash and peel the potatoes. Cut them into even-sized chunks for uniform cooking.
2. Boil the Potatoes: Place the potato chunks in a large pot and cover them with water. Add a pinch of salt. Bring the water to a boil, then reduce to a medium heat. Cook until the potatoes are fork-tender, about 15-20 minutes.
3. Drain and Cool: Once the potatoes are cooked, drain them in a colander and let them cool for a few minutes.
4. Mix the Dressing: In a large mixing bowl, combine the mayonnaise, Dijon mustard, apple cider vinegar, sugar, salt, and black pepper. Stir until smooth and evenly mixed.
5. Combine Ingredients: Add the cooled potatoes into the bowl with the dressing. Gently fold them to combine without breaking the potatoes.
6. Add Vegetables and Eggs: Incorporate the chopped celery, onion, and hard-boiled eggs into the potato mixture. Mix gently and adjust seasoning if needed.
7. Chill: For the best flavor, cover the bowl with plastic wrap and refrigerate for at least 1-2 hours before serving.
8. Serve and Garnish: Before serving, give the salad a gentle stir. Transfer it to a serving platter and garnish with chopped parsley.

By following these steps, you’ll create a delightful version of Lunch Lady Potato Salad that will have everyone coming back for seconds!