INGREDIENTS
1 7 ounce package
Roast beef
4
Green bell peppers, large
2
Mezzetta whole golden greek peperoncini
1 cup
Mushrooms
1
White onion
2 tbsp
Mustard, brown
1/2 tsp
Black pepper, ground
1/2 tsp
Salt
2 tbsp
Olive oil
1 7 ounce package
Provolone cheese