1. Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius).
2. Clean chicken and place in a roasting pan. Place sliced onions on top of the chicken pieces, pressing down slightly.
3. Combine the rest of the ingredients in a bowl and mix well. Taste and adjust seasoning if desired.
4. Pour over chicken, smothering all the pieces.
5. Cover pan tightly and bake for one hour and 45 minutes. Uncover and bake for 15 more minutes.