INGREDIENTS
1
onion
1
green bell pepper
6 oz
brown mushrooms
1 lb
ground beef
2 tbsp
oil
1 tbsp
ketchup
1 tbsp
Worcestershire sauce
1/2 tsp
salt
1/2 tsp
black pepper
1/2 tbsp
cornstarch
1/2 cup
cold beef broth
12
slices provolone
6
hoagie rolls/sub rolls