Place the mushrooms, onion, chicken broth, red wine, tomato paste, garlic, rosemary, thyme, bay leaf and pepper in the Calphalon Slow Cooker. Stir, making sure that the tomato paste has been incorporated. Add the chicken thighs. Replace the cover on the slow cooker. Set the slow cooker on on low heat and cook for 7 to 8 hours. Or set it on high heat and cook for 3 1/2 to 4 hours.
At the end of the cooking time, remove the chicken and vegetables to a plate, cover and keep warm. Skim the fat from the pan sauce. Measure the remaining sauce. Add more chicken broth if necessary to make 2 cups. Transfer the liquid to a medium sauce pan. Combine the 1/4 cup chicken broth with 2 tablespoons all-purpose flour in a small bowl. Stir until smooth. Add the flour broth mixture to the sauce pan. Cook the sauce on medium heat until thick and bubbling. Drizzle some of the sauce over the chicken. Put the remaining sauce into a gravy boat. Sprinkle the parsley over the chicken and serve. Pass the additional sauce.
Delicious served with creamy, soft polenta.