Cook ground beef in a large skillet over medium-high heat, stirring until beef crumbles and is no longer pink; drain well. Return cooked beef to skillet.
Stir in tomatoes, next 3 ingredients, and, if desired, jalapeños and liquid. Reduce heat to low, and simmer 15 minutes or until thickened. Serve mixture on toasted buns.
Note: For testing purposes only, we used KC Masterpiece Original Barbecue Sauce.