Creating this delectable One Pan Mushroom Chicken is simple if you follow these easy steps:

1. Prepare the Chicken: Season the chicken breasts with salt and pepper on both sides.
2. Heat the Pan: In a large skillet, heat olive oil over medium-high heat.
3. Sear the Chicken: Add the chicken breasts to the skillet and sear them for about 5-6 minutes on each side until they are golden brown. Remove the chicken from the pan and set aside.
4. Sauté the Onions and Garlic: In the same pan, add the chopped onion and cook until translucent, about 3-4 minutes. Stir in the minced garlic and cook for an additional minute.
5. Add the Mushrooms: Add the sliced mushrooms to the pan and sauté for about 5 minutes until they are tender and browned.
6. Deglaze the Pan: Pour in the chicken broth, scraping the bottom of the pan to lift any browned bits. This adds flavor to the dish.
7. Stir in the Cream and Herbs: Lower the heat and stir in the heavy cream, dried thyme, and dried rosemary. Allow the mixture to simmer for 2-3 minutes.
8. Return the Chicken: Place the seared chicken breasts back into the skillet, spooning some of the sauce over the top. Cover and let it simmer on low heat for another 5-7 minutes, or until the chicken is cooked through.
9. Garnish and Serve: Once cooked, remove from heat and garnish with fresh parsley before serving.

These steps will guide you in effortlessly creating an incredible dish that showcases the wonderful flavors of One Pan Mushroom Chicken.