Prep Time: 15
Cook Time: 5
Serves: Serves: 8
Heat oil in large skillet over medium heat. Add bell peppers, onion and mushrooms; cook, stirring frequently, 7 minutes or until crisp-tender. Stir in Worcestershire sauce, cilantro and roast beef. Cook just until beef is warmed through; set aside.
Spread bread slices with mayonnaise if desired; place on baking sheet. Cover with meat and pepper mixture; top with cheese. Bake in preheated 350°F oven 5 minutes or until cheese is melted.