1. Heat oven to 400 F. In large skillet, brown ground beef over medium heat 6 minutes. Add bell pepper and onion; cook 3 to 4 minutes or until beef is no longer pink and vegetables are crisp-tender. Season with 3/4 teaspoon salt and 1/2 teaspoon pepper.
2. Place bread shell on baking sheet. Remove beef and vegetables from skillet with slotted spoon; arrange on top of bread shell. Sprinkle with cheese. Bake 8 o 10 minutes or until cheese is melted; cut into 8 wedges.
