Barbecue Baked Chicken

2 to 3 pounds chicken parts, boned or not
1/4 cup (1/2 stick) butter
1 cup packed brown sugar
1/2 cup diced green bell pepper
1/2 cup diced onion
1/4 cup vinegar
1 cup catsup
1 bottle barbecue sauce

Melt butter in a cast iron Dutch oven; crumble brown sugar and add to melted butter. Add onions, peppers, vinegar and catsup. Simmer for 5 minutes.

Remove from heat; and pour barbecue sauce over chicken. Bake covered for 30 minutes at 325 degrees F.

Uncover, baste and bake 30 minutes more, basting as needed. Raise temperature to 350 degrees F for the last 15 to 20 minutes, basting frequently.