Creating Flaky Puff Pastry Squares with Egg and Ham is simple when you follow these clear steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
2. Prepare Puff Pastry: Roll out the thawed puff pastry sheet on a lightly floured surface to ensure it’s even. Cut the pastry into squares, about 4×4 inches in size.
3. Make the Filling: In a medium bowl, whisk together the eggs, heavy cream, salt, and pepper until well combined.
4. Add Ham and Cheese: Stir in the diced ham and shredded cheese, as well as the chopped chives if using, ensuring everything is evenly mixed.
5. Fill Pastry Squares: Place a spoonful of the egg and ham filling in the center of each pastry square, making sure not to overfill.
6. Seal the Squares: Fold the edges of the pastry over the filling to form triangles or rectangles, pressing gently to seal. Brush the tops with beaten egg for a glossy finish.
7. Bake: Place the squares on the prepared baking sheet and bake in the preheated oven for 20-25 minutes, or until they are golden brown and puffed up.

By following these straightforward instructions, you’ll have delicious Flaky Puff Pastry Squares with Egg and Ham ready to serve in no time!