Additional Idea. The 4 whole eggs can be replaced with the same amount of egg whites, lightly beaten with a fork, making it suitable for those who are intolerant to yolks or useful for using up leftover egg whites.

We can make the spinach and provola pie even richer and more delicious by cooking the spinach mixture inside a shell of savory shortcrust pastry, puff pastry, or brisée, perfect for a buffet or a picnic.