Creating Gouda & Mushroom Stuffed Chicken is simple when you follow these steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Filling: In a skillet, heat olive oil over medium heat. Add the chopped mushrooms and sauté for about 5-7 minutes until they are soft.
3. Add Garlic and Seasoning: Stir in the minced garlic, dried thyme, salt, and pepper. Cook for another 2 minutes, then remove from heat.
4. Mix in Gouda: Add the shredded Gouda cheese to the mushroom mixture, stirring until well combined.
5. Prepare the Chicken: Place each chicken breast on a cutting board. Using a sharp knife, make a pocket in each breast for the filling.
6. Stuff the Chicken: Generously fill each chicken breast with the Gouda and mushroom mixture. Secure with toothpicks if necessary.
7. Coat with Breadcrumbs: If desired, roll the stuffed chicken in breadcrumbs for a crispy exterior.
8. Bake: Place the stuffed chicken breasts in a baking dish. Bake for 30-35 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).
9. Rest and Garnish: Let the chicken rest for 5 minutes before serving. Garnish with fresh parsley for added flavor and color.
10. Serve: Plate the stuffed chicken, allowing the filling to peek out for an appealing presentation.

Following these steps will lead you to a deliciously stuffed chicken, bursting with flavor and textures!