01 -
Sprinkle both sides of the chicken breasts with salt and black pepper for balanced seasoning.
02 -
Warm olive oil in a large skillet over medium-high heat. Sear chicken breasts for 6–7 minutes per side until golden and fully cooked. Ensure the thickest part has no pink.
03 -
Transfer seared chicken to a plate and cover with foil to retain warmth.
04 -
Reduce heat to medium. Sauté chopped onion in the same skillet for 3–4 minutes until translucent. Add garlic and cook 1–2 minutes, stirring frequently.
05 -
Pour Irish whiskey into the skillet, scraping up any fond from the pan. Simmer for 5 minutes to allow alcohol to evaporate and flavors to concentrate.
06 -
Stir in chicken broth and bring the mixture to a gentle simmer for 5 minutes.
07 -
Lower heat to maintain a gentle simmer. Slowly add heavy cream, stirring continuously. Blend in Dijon mustard and thyme. Simmer for 3–4 minutes for a velvety, thickened sauce. Adjust salt and pepper as needed.
08 -
Return chicken breasts to the skillet. Spoon sauce over each piece and warm gently for 2–3 minutes to meld flavors.
09 -
Stir butter into the sauce until fully melted for a glossy finish.
10 -
Arrange chicken on plates and generously spoon over the whiskey cream sauce. Sprinkle with chopped parsley before serving.