Season chicken with salt and pepper. Dredge in the flour and shake off the excess flour. Set aside.
Heat the oil and 2 tablespoons of the butter in a large skillet over medium-high heat. Place the flour-dusted chicken in the pan and cook, turning once, until the chicken is golden and just barely cooked through, about 5 to 6 minutes. Transfer the chicken to a plate and set aside.
Melt the remaining butter in the pan and allow it to bubble. Add mushrooms and sauté until mushrooms begin to brown. Add minced onions and garlic, and stir until aromatic.
Deglaze pan with Florio Marsala. Allow to reduce by half before adding stock and heavy cream. Use a spoon to scrape any brown bits at the bottom of the pan. Reduce heat to medium and allow it to thicken and darken in color.
Add thyme and place chicken (and any juices) back into the pan and cook for 2-3 minutes.
Enjoy!
Don’t forget to sip Florio Marsala neat — the Sicilian way — while you’re crafting your masterpiece.