INGREDIENTS
2 lb
96% lean ground beef, lean
1 1/2
Green bell peppers
16 oz
Mushrooms, fresh
1 1/2 cups
Yellow onions
2 cups
Beef broth
4 tbsp
Ketchup
2 tbsp
Worcestershire sauce
1 tsp
Black pepper
2 tbsp
Cornstarch
1 tsp
Sea salt
12
Brioche hamburger buns
2 tbsp
Butter, unsalted
1
pkg. Provolone cheese