01 -
Season the chicken breasts on both sides with salt and pepper. (Optional) Lightly coat the chicken with flour for a golden, slightly crisp exterior.
02 -
Heat olive oil or butter in a large skillet over medium-high heat. Add the chicken breasts and cook for 4-5 minutes per side, until golden brown but not fully cooked. Remove and set aside.
03 -
In the same skillet, add the mushrooms and sauté for 5 minutes, or until golden and tender. Add the garlic and onion, cooking for another 2-3 minutes until fragrant and softened.
04 -
Pour in the chicken broth and scrape the bottom of the skillet to deglaze. Stir in the heavy cream and thyme. Bring the sauce to a simmer. Add Parmesan cheese (if using) and stir until the sauce is smooth and slightly thickened.
05 -
Return the chicken breasts to the skillet, spooning the sauce over them. Cover and simmer on low heat for 8-10 minutes, or until the chicken is cooked through (internal temperature of 74°C).
06 -
Garnish with fresh parsley and serve warm. Pair with mashed potatoes, rice, or pasta to soak up the creamy mushroom sauce.