Preheat your oven to 400°F (200°C).

In a large mixing bowl, combine the cream cheese, shredded mozzarella, cheddar, fresh herbs, garlic powder, salt, and pepper until smooth.

Roll out the thawed puff pastry to approximately 1/8 inch thick and slice into 3-inch squares.

Spoon about one tablespoon of the cheese mixture into the center of each pastry square, then fold and seal the corners.

Arrange sealed bites on a parchment-lined baking sheet and brush tops with a beaten egg for color.

Bake for 15-20 minutes until golden brown and puffed.

Let them cool slightly before serving. Enjoy warm or with a dipping sauce!