Creating Creamy Chicken Pillows can be simple if you follow these steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Prepare Filling: In a large bowl, combine the shredded chicken, cream cheese, cheddar cheese, mixed vegetables, garlic powder, onion powder, salt, and black pepper. Mix until well combined.
3. Roll Out Pastry: On a lightly floured surface, roll out the puff pastry sheets to about ¼ inch thick.
4. Cut Pastry: Cut the pastry into squares, approximately 4×4 inches each.
5. Fill Pastry: Spoon about 2 tablespoons of the chicken filling onto the center of each pastry square.
6. Fold Pastry: Fold the corners of the pastry over the filling to create a pillow shape. Pinch the edges to seal securely.
7. Brush with Egg: Place the filled pillows on the prepared baking sheet. Brush the tops with the beaten egg for a golden finish.
8. Bake: Bake in the preheated oven for 25-30 minutes, or until the pastries are puffed and golden brown.
9. Cool Slightly: Remove from the oven and let cool for a few minutes before serving.

These simple steps will guide you through making these delightful Creamy Chicken Pillows effortlessly.