Creating Baked Ham and Cheese Croissants is a simple process if you follow these steps carefully:

1. Preheat the Oven: Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper.
2. Prepare the Dough: Unroll the package of croissant dough on a clean, flat surface. Separate the triangles.
3. Add Ham: Place a slice of ham on each triangle of dough.
4. Add Cheese: Layer a slice of cheese over the ham. If desired, spread a thin layer of Dijon mustard on the ham.
5. Season: Sprinkle freshly cracked black pepper on top of the cheese for added flavor.
6. Roll the Croissant: Starting from the wide end, roll the dough towards the point, forming a croissant shape. Pinch the edges to seal.
7. Arrange on Baking Sheet: Place the rolled croissants on the prepared baking sheet, leaving space between each one.
8. Egg Wash: Brush the tops of the croissants with the beaten egg for a golden finish.
9. Bake: Place the baking sheet in the preheated oven and bake for 20-25 minutes or until the croissants are golden brown and puffed.
10. Cool: Remove from the oven and allow to cool slightly before serving.

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