1/4 cup chopped parsley
3 tbsp. unsalted butter
1/2 tsp. kosher salt
1/2 cup unsalted chicken stock
1/2 cup marsala wine, (sweet)
4 cups brown mushrooms, 1/2" slices
1/4 cup white onions, minced
2 cloves garlic, minced
1/4 cup olive oil
1/2 tsp. black pepper
1 tsp. kosher salt
3/4 cup all-purpose flour
4 boneless chicken breasts, (1 1/2 pounds)