01 -
Generously season both sides of the chicken breast halves with salt and freshly ground black pepper.
02 -
Bring a small saucepan of water to a boil. Add garlic cloves and boil for 5 minutes. Drain, cool, and peel the cloves.
03 -
In a large skillet, melt the butter over medium-high heat. Add the chicken breasts and sear for 1 minute per side until lightly browned.
04 -
Add the halved or quartered mushrooms to the skillet. Continue cooking, turning the chicken occasionally, for approximately 2 minutes.
05 -
Stir in the chopped shallots, peeled garlic cloves, Port wine, and quartered tomatoes. Cover the skillet and reduce heat to medium. Cook for 10 minutes, or until an instant-read thermometer inserted into the thickest part of the chicken reaches 165°F.
06 -
Transfer chicken breasts, mushrooms, and tomatoes to a warm serving platter. If the pan sauce is thin, simmer uncovered on medium-high heat for 1–2 minutes to thicken slightly.
07 -
Pour the reduced sauce over the chicken and garnish with chopped fresh parsley. Serve immediately.