Roast Beef Po' Boy

1. Melt butter in medium saucepan; stir in flour.
2. Cook over medium heat, stirring constantly, until flour mixture is lightly browned, about 4 minutes.
3. Add onion and bell pepper.
4. Cook over medium heat, stirring constantly, for about 5 minutes; gradually stir in the beef broth.
5. Add the 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.

Serves 4