Combine ground beef, onion, and bell pepper in a large skillet over medium heat; cook until meat is brown and vegetables are tender, stirring to break up meat. Drain off excess fat.
Stir in tomato sauce, brown sugar, salt, and TABASCO® Habanero Sauce. Cover and simmer 30 to 40 minutes, stirring occasionally. To serve, spoon about 1/2 cup meat mixture on each bun.
Makes 8 servings.