Pat 4 chicken breasts dry and season generously with salt and pepper on both sides.
4 chicken breasts, salt, pepper
Heat 1 Tablespoon olive oil and 1 Tablespoon butter in a large skillet over medium-high heat. When butter is melted, add chicken breasts and brown on each side (about 6-7 minutes per side) until chicken is cooked all the way through. Remove from pan.
1 Tablespoon olive oil, 1 Tablespoon butter
Using same pan and any drippings from the meat, add 1½ cups white mushrooms and ½ yellow onion and cook until golden brown and caramelized. You may need to add a little more oil if pan becomes too dry.
1½ cups white mushrooms, ½ yellow onion
Add 1 Tablespoon all purpose flour and stir to coat. Cook 1-2 minutes.
1 Tablespoon all purpose flour
Add in ½ cup chicken broth, ½ cup heavy cream, 2 teaspoon Worcestershire sauce and 1 teaspoon Dijon mustard and whisk gently until thickened. Finally, add salt and pepper to taste.
½ cup chicken broth, ½ cup heavy cream, 2 teaspoon Worcestershire sauce, 1 teaspoon Dijon mustard
Place chicken breasts back in the pan and cover with sauce. Allow to heat through.
Plate and spoon sauce over chicken to serve. Optional: Garnish with 1 teaspoon fresh thyme and 1 teaspoon flat leaf parsley. Enjoy!
1 teaspoon flat leaf parsley, 1 teaspoon fresh thyme