Barbecue-Grilled Chicken Recipe

1 chicken (3 to 3-1/2 pounds), cut into 8 pieces
1 cup ketchup
1/4 cup firmly packed brown sugar
2 tablespoons white vinegar
1 tablespoon instant minced onion
2 tablespoons Worcestershire or steak sauce
1 teaspoon dry or 2 tablespoons prepared mustard

Preheat the oven to 350F. Place the chicken in a 9" x 13" baking dish that has been coated with nonstick cooking spray and bake for 25 minutes. Meanwhile, in a medium-sized bowl, mix together the remaining ingredients. Preheat the grill to medium heat. Coat the chicken with the sauce mixture and place on the grill. Grill for 15 to 20 minutes, or until the juices run clear and no pink remains, turning halfway through the grilling.