With just a few simple steps, you can create these savory Ham and Cheese Puff Pastry Sticks:

1. Preheat Oven: Begin by preheating your oven to 400°F (200°C). This is important for achieving that perfect golden finish.

2. Prepare the Puff Pastry: On a lightly floured surface, roll out the thawed puff pastry to smooth it out. The goal is an even thickness.

3. Cut the Pastry: Slice the puff pastry sheet into rectangles, about 3 x 4 inches in size. You can make them larger or smaller depending on your preference.

4. Mix the Filling: In a bowl, combine the diced ham and shredded cheese. If you like, add a tablespoon of Dijon mustard, salt, and pepper for added flavor.

5. Assemble the Sticks: Place a spoonful of the ham and cheese mixture in the center of each pastry rectangle. Be careful not to overfill them.

6. Fold and Seal: Fold the pastry over the filling to create a stick shape. Use a fork to press down on the edges, sealing them tightly.

7. Prepare for Baking: In a small bowl, whisk the egg and brush it over the tops of the puff pastry sticks. This will give them a beautiful golden color when baked.

8. Optional Toppings: If you wish, sprinkle sesame seeds on top for an added crunch before baking.

9. Bake: Place the assembled sticks on a baking sheet lined with parchment paper. Bake for 15-20 minutes until they are puffed up and golden brown.

10. Cool and Serve: Once baked, remove them from the oven and let them cool for a few minutes. This helps avoid burns when biting into the delicious sticks.