Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Lightly dust a clean surface with flour, then roll out the puff pastry sheet until it’s slightly thinner.
In a bowl, combine the cheddar cheese, mozzarella cheese, a pinch of salt and pepper, and the dried oregano or thyme if using.
Cut the puff pastry into 8 equal squares.
Place a generous spoonful of the cheese mixture in the center of each square.
Fold each square into a triangle and press the edges with a fork to seal.
In a small bowl, mix the beaten egg with milk to create an egg wash.
Brush the tops of each pastry with the egg wash.
Transfer the pastries to the prepared baking sheet and bake for 15-20 minutes, or until golden brown and crispy.
Let them cool slightly before serving.
Variations & Tips
For a spicy kick, add some diced jalapeños to the cheese mixture. If you prefer a milder flavor, a sprinkle of smoked paprika or a touch of garlic powder can add depth without overwhelming the cheese. You could also swap out the cheeses for your favorites—Gruyère or a smoked Gouda would be delicious alternatives! For an even flakier pastry, try using frozen phyllo dough buttered and layered with the cheese mixture for a twist on traditional puff pastry.
