Preheat oven to 350 degrees F (175 degrees C). Grease a baking sheet.

Beat 1 egg in a medium bowl.

Mix in the shredded mozzarella cheese, dried parsley, garlic powder, onion powder, salt, and black pepper.

On a lightly floured surface, cut each sheet of puff pastry into 6 equal squares.

This gives you 12 squares in total.

Beat the remaining egg with water in a small bowl to make an egg wash.

Brush edges of each pastry square lightly with the egg wash.

Place a heaping tablespoon of the cheese mixture in the center of each square.

Fold the pastry over the filling to form a triangle or rectangle.

Seal edges with a fork to prevent filling from leaking.

Transfer the filled pastries to the prepared baking sheet.

Brush the tops with the remaining egg wash.

Sprinkle with sesame seeds.

Bake in the preheated oven for 30 minutes, or until golden brown.

Serve immediately.