1 package (about 450g) puff pastry, thawed
1 egg, beaten (for egg wash)
Sesame seeds, or poppy seeds for topping (optional)
Instructions:

Prepare the Filling:
If using fresh spinach, wash it thoroughly. Heat a little olive oil in a large skillet. Add the chopped onion and cook until softened. Add the minced garlic and cook for another minute.
Add the spinach to the skillet and cook until wilted. If using frozen spinach, ensure it’s well squeezed dry before adding it to the skillet.
Remove from heat and let it cool slightly.
In a bowl, combine the cooked spinach mixture, crumbled feta cheese, beaten egg, Parmesan cheese (if using), salt, pepper, and nutmeg (if using). Mix well.

Assemble the Rolls: