01 -
Set the oven temperature to 200°C (400°F).
02 -
In a mixing bowl, combine the thawed spinach, softened cream cheese, shredded mozzarella and cheddar cheeses, garlic powder, salt, and pepper. Mix thoroughly until smooth and uniform.
03 -
On a lightly floured surface, roll out the puff pastry sheet to an even thickness. Using a 7.5 cm diameter cutter, cut into circles.
04 -
Place a spoonful of the filling in the center of each pastry circle. Fold each circle over to form a half-moon shape and press the edges firmly with a fork to seal.
05 -
Brush the surface of each folded pastry with the beaten egg to achieve a golden crust during baking.
06 -
Arrange the prepared puffs on a parchment-lined baking sheet. Bake for 15 to 20 minutes or until the pastry is puffed and golden brown.