Creating Ham and Cheese Crescent Roll is straightforward. Follow these simple steps to prepare this delicious dish:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Baking Sheet: Line a baking sheet with parchment paper or grease it lightly.
3. Unroll the Dough: Carefully unroll the crescent roll dough on a clean surface. Do not separate the triangles yet.
4. Add Mustard (Optional): If you’re using Dijon mustard, spread a thin layer over the dough for added flavor.
5. Layer Ham and Cheese: Place a slice of ham and a slice of cheese on the wider end of each triangle.
6. Season: Add salt and pepper to taste.
7. Roll Up: Starting from the wide end, roll up each triangle tightly, encasing the filling completely.
8. Place on Baking Sheet: Arrange the rolled crescent dough on the prepared baking sheet, leaving space between each roll.
9. Prepare Egg Wash: In a small bowl, beat the egg. Brush the top of each roll with the egg wash for a golden finish.
10. Bake: Place the baking sheet in the preheated oven and bake for 15-20 minutes or until the rolls are golden brown.
11. Cool Slightly: Once baked, remove from the oven and allow the rolls to cool for a few minutes.
12. Garnish (Optional): If desired, sprinkle fresh parsley on top for a pop of color.

These steps will guide you in creating these incredible rolls effortlessly.