Ingredients:
Brown your meat
Add your butter
Add in your onions and let them sweat down
Add your bell peppers and mushrooms and cook
In a small cup or bowl, mix cornstarch and broth
Add broth slurry, ketchup, soy sauce, salt, and pepper to pan.
Stir and cook 5 more minutes
Put provolone on buns and add meat mix on top! Enjoy!