Start by seasoning the chicken breasts generously on both sides with salt, pepper, and dried thyme.
In a large, heavy-bottomed skillet, heat the olive oil over medium-high heat. Add the seasoned chicken breasts to the skillet and sear them until they develop a beautiful golden-brown crust, approximately 5-6 minutes per side. Once browned, remove the chicken from the skillet and set aside on a plate.
Using the same skillet, reduce the heat to medium and add the butter. Allow it to melt and foam slightly before adding the sliced mushrooms. Sauté the mushrooms for about 4-5 minutes, stirring occasionally, until they are nicely browned and tender.
Stir in the minced garlic and cook for an additional 30 seconds, or until the garlic becomes fragrant—be careful not to burn it!
Pour in the chicken broth, making sure to scrape up any delicious brown bits from the bottom of the skillet. Bring the mixture to a gentle simmer, then stir in the heavy cream, mixing thoroughly. Let the sauce simmer for 3-4 minutes until it slightly thickens.
Return the seared chicken breasts to the skillet, placing them in the creamy sauce. Spoon the sauce and mushrooms over the chicken to ensure it’s well coated. Allow the dish to simmer for an additional 5-7 minutes, until the chicken is thoroughly cooked.
Taste the sauce and adjust the seasoning if necessary with more salt and freshly cracked pepper.
Notes
For an appealing presentation, garnish with freshly chopped parsley.