350 g of Lesters shaved steak, pan-seared
1/2 bell pepper, julienned
1/2 onion, julienned
4 sub rolls (6 inches) or panini buns
8 slices of mozzarella cheese
4 tbsp softened butter
Pepper to taste
Cheese Sauce:
1 tbsp butter
1 tbsp flour
1 cup milk
4 slices processed cheese
Salt and pepper to taste