These chicken thighs with mushroom sauce are a rich and flavorful dish that is perfect for a special occasion. The chicken is seasoned with garlic, thyme, and rosemary, and then baked in the oven until it is tender and juicy. The mushroom sauce is made with butter, garlic, mushrooms, and cream, which gives it a creamy and delicious flavor. Serve it with a side of mashed potatoes or roasted vegetables for a complete meal.