Makes 6 servings

	Nonstick cooking spray
1	pound 95% lean ground beef
1-1/2	cups finely chopped green bell pepper
1	can (14-1/2 ounces) stewed tomatoes
1/4	cup water
2	tablespoons tomato paste
1	tablespoon chili powder
1	tablespoon Worcestershire sauce
1	packet sugar substitute
1	teaspoon ground cumin, divided
6	hamburger buns, warmed

Lightly coat 12-inch skillet with cooking spray. Heat over high heat until hot. Add beef; cook and stir 3 minutes or until no longer pink. Drain on paper towels; set aside. Wipe out skillet with paper towel.
Coat skillet with cooking spray; heat over medium-high heat until hot. Add beef and bell pepper; cook and stir 4 minutes or until bell pepper is just tender. Add tomatoes, water, tomato paste, chili powder, Worcestershire, sugar substitute and 1/2 teaspoon cumin. Bring to a boil. Reduce heat and simmer, covered, 20 minutes or until thickened.
Remove from heat and stir in remaining 1/2 teaspoon cumin. If thicker consistency is desired, cook 5 minutes longer, uncovered, stirring frequently.
Spoon 1/2 cup mixture onto each bun.