Creating Mushroom Cream Cheese Stuffed Croissants is a simple process. Follow these steps to achieve the perfect result:

1. Preheat the Oven: Set your oven to 375°F (190°C).
2. Prepare the Filling: In a skillet, heat the olive oil over medium heat. Add the minced garlic and chopped mushrooms, cooking until the mushrooms are softened, about 5-7 minutes.
3. Season: Stir in the fresh thyme, salt, and pepper. Remove from heat and let the mixture cool slightly.
4. Mix the Filling: In a bowl, combine the cooled mushroom mixture with the softened cream cheese. Mix until well combined and creamy.
5. Prepare the Croissant Dough: Unroll the crescent roll dough on a clean surface. Separate it into triangles along the perforated lines.
6. Fill the Croissants: Spoon about 1 tablespoon of the mushroom cream cheese mixture onto the wide end of each triangle.
7. Roll the Croissants: Starting from the wide end, roll the dough towards the pointed end to form a crescent shape. Make sure to seal the edges to prevent the filling from leaking out.
8. Place on Baking Sheet: Arrange the stuffed croissants on a baking sheet lined with parchment paper, ensuring they have space to expand.
9. Egg Wash: Brush the tops of the croissants with the beaten egg for a golden finish.
10. Bake: Place in the preheated oven and bake for 25-30 minutes, or until golden brown.
11. Cool and Serve: Once baked, remove from the oven and let them cool for a few minutes before serving. Optionally, sprinkle with grated Parmesan cheese for added flavor.

These steps will lead you to delicious Mushroom Cream Cheese Stuffed Croissants, perfect for any occasion.