PREPARATION:
- 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.
