Preheat your oven to 400°F (200°C) and prepare the filling by combining fresh spinach, crumbled cheese, spices, and a pinch of salt.

Roll out the puff pastry sheet on a floured surface and cut into 4x4 inch squares.

Scoop some filling onto each pastry square, fold diagonally, and crimp the edges with a fork.

Prepare an egg wash by whisking one egg with a splash of water and brush the top of each pastry.

Bake on a parchment-lined baking sheet for 15-20 minutes or until puffed and golden brown.

Let cool for 5 minutes before transferring to a wire rack and serve warm.