Follow these simple steps to create the delicious Mozzarella Pepperoni Croissant Rolls:

1. Preheat the Oven: Preheat your oven to 375°F (190°C) and prepare a baking sheet by lining it with parchment paper or greasing it with cooking spray.
2. Prepare Ingredients: Gather all the ingredients and set them out for easy access.
3. Open Crescent Roll Package: Carefully unroll the refrigerated croissant dough and separate the triangles along the perforated lines.
4. Add Cheese and Pepperoni: Place a small handful of shredded mozzarella and a few slices of pepperoni on the wide end of each triangle, adding a pinch of Italian herbs if desired for extra flavor.
5. Roll Up the Croissants: Starting from the wide end, carefully roll the dough toward the tip to enclose the cheese and pepperoni. Ensure the filling is securely inside.
6. Place on Baking Sheet: Arrange the rolls on the prepared baking sheet, spacing them out evenly.
7. Prepare the Egg Wash: In a small bowl, beat the egg to create an egg wash. Brush this mixture over each roll to create a golden, glossy finish when baked.
8. Bake: Bake in the preheated oven for 20-25 minutes or until golden brown and flaky.
9. Cool Slightly: Remove the rolls from the oven and let them cool for 5-10 minutes before serving.
10. Serve Warm: Enjoy the rolls while they are still warm for the best flavor and texture.

Following these steps will guide you in creating these incredible Mozzarella Pepperoni Croissant Rolls effortlessly!