Mix all ingredients together (including dressing, eggs, and feta cheese) if you are planning to finish it in 1-2 days. If making it as a meal prep dish to last 3-4 days, I suggest preparing the dressing in a separate container and chopping the feta cheese and storing in a separate container to avoid the salad going soggy. Boil the eggs in one batch, store in fridge with the shell on and remove the shell and chop up the egg when you plan to eat the salad. Store the spinach leaves separately as well.
Keyword calcium, feta, fibre, lentil, meal prep, one bowl recipe, salad, sunflower, sunflower seeds, vegetarian