Cook the spinach until all of its moisture has evaporated.

Slice the onion into thin strips and fry it with salt, pepper, and turmeric until golden.

Mix the cooked spinach, fried onion, cream cheese, salt, and pepper until well combined.

Preheat the oven to 200°C (392°F).

Roll out the puff pastry, spread the filling inside, and roll it up. Cut into pieces of your desired size.

Brush the surface of the pastry rolls with the beaten egg.

Turn off the top heating element of the oven and bake the rolls for 20 minutes.

Then turn the top heat back on and bake for an additional 10 minutes, or until golden brown.