Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.

In a medium bowl, combine softened cream cheese, shredded sharp cheddar cheese, sliced jalapenos, and garlic powder. Blend until smooth.

Roll out the thawed puff pastry on a lightly floured surface to about 1/4 inch thick, then slice it into 2-inch wide strips.

Spoon a generous amount of filling onto one half of each strip, fold the other half over, and twist the ends to seal.

Whisk the egg in a small bowl and brush the tops of each twist with the egg wash.

Bake for 15-20 minutes until golden brown and puffed. Let cool on the baking sheet for a few minutes before serving.