Sauté vegetables in oil until soft.

Process vegetables and combine with challah, egg and spices, mixing well.

Lifting skins lightly, place one tablespoon stuffing under skin.

Combine basting ingredients and spread onto chicken.

Bake, covered, for two and a half hours at 400 degrees Fahrenheit. Uncover for the last 15 minutes.

Place sliced onions into a 10- x 16-inch pan. Arrange the stuffed chicken quarters over onions.