INGREDIENTS
1
flank steak
2
(5-inch) portobello mushroom caps
2 tsp
Garlic
1 1/2 cups
Green bell pepper
1 cup
Onion
1/2 tsp
Lower-sodium soy sauce
1/4 tsp
Mustard, dry
1/2 tsp
Worcestershire sauce
2 tsp
All-purpose flour
1/4 tsp
Black pepper, freshly ground
1/4 tsp
Kosher salt
2 tsp
Olive oil, extra-virgin
4
hoagie rolls, toasted
1/2 cup
1% low-fat milk
2 tbsp
Parmigiano-reggiano cheese, grated
1 oz
Provolone cheese