1. Preheat oven to 325°.
2. Rinse brisket, and pat dry. Combine garlic salt and next 3 ingredients (through pepper); sprinkle evenly over brisket.
3. Heat a 4- to 6-quart ovenproof Dutch oven over medium heat. Add oil; swirl to coat. Add brisket; cook 5 minutes on each side or until browned. Add 1/2 cup water to pan. Cover and bake at 325° for 3 hours or until tender.
4. Remove brisket from drippings, reserving drippings. Skim fat from drippings. Serve brisket with drippings, if desired, and Barbecue Sauce.