1. Melt butter in medium saucepan; stir in flour.
2. Cook over medium heat, stirring constantly, until flour browns,
about 4 minutes.
3. Add onion and bell pepper.
4. Cook over medium heat, stirring constantly, about 5 minutes;
gradually stir in broth.
5. Add Worcestershire sauce, Tabasco and thyme; stir constantly
until mixture boils and thickens.
6. Cut a thin slice from top of each roll; scoop out soft insides.
7. Arrange meat on each roll; spoon gravy over meat and replace
tops on rolls.