Roast brisket at 325° F in covered pan for 3 to 4 hours (until fork-tender). Cool and refrigerate.
Meanwhile, prepare Barbecue Sauce.
Cut off excess fat; carve meat into thin slices. Layer meat and Barbecue Sauce in a large oven-to-table casserole. Cover with foil. Bake 1 hour at 350° F or until heated through.
Mix all ingredients in saucepan. Bring to boil. Lower heat and simmer, uncovered, 30 minutes, stirring occasionally.
Servings: